--- a/tests/package.json
+++ b/tests/package.json
@@ -47,6 +47,7 @@
     "testEthNesting": "yarn _test './**/eth/nesting/**/*.*test.ts'",
     "testEthFractionalizer": "yarn _test './**/eth/fractionalizer/**/*.*test.ts'",
     "testEthMarketplace": "yarn _test './**/eth/marketplace/**/*.*test.ts'",
+    "testEthMarket": "yarn _test './**/eth/marketplace-v2/**/*.*test.ts'",
     "testSub": "yarn _test './**/sub/**/*.*test.ts'",
     "testSubNesting": "yarn _test './**/sub/nesting/**/*.*test.ts'",
     "testEvent": "yarn _test ./src/check-event/*.*test.ts",
--- a/tests/src/eth/marketplace-v2/Market.sol
+++ b/tests/src/eth/marketplace-v2/Market.sol
@@ -1,13 +1,16 @@
 // SPDX-License-Identifier: UNLICENSED
 pragma solidity 0.8.17;
 
+import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
 import "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
 import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
 import { UniqueNFT, CrossAddress } from "@unique-nft/solidity-interfaces/contracts/UniqueNFT.sol";
+import { UniqueFungible, CrossAddress as CrossAddressF } from "@unique-nft/solidity-interfaces/contracts/UniqueFungible.sol";
 import "@unique-nft/solidity-interfaces/contracts/CollectionHelpers.sol";
 import "./royalty/UniqueRoyaltyHelper.sol";
 
-contract Market {
+contract Market is Ownable, ReentrancyGuard {
     using ERC165Checker for address;
 
     struct Order {
@@ -20,6 +23,7 @@
     }
 
     uint32 public constant version = 0;
+    uint32 public constant buildVersion = 3;
     bytes4 private constant InterfaceId_ERC721 = 0x80ac58cd;
     bytes4 private constant InterfaceId_ERC165 = 0x5755c3f2;
     CollectionHelpers private constant collectionHelpers =
@@ -29,7 +33,6 @@
     uint32 private idCount = 1;
     uint32 public marketFee;
     uint64 public ctime;
-    address selfAddress;
     address public ownerAddress;
     mapping(address => bool) public admins;
 
@@ -55,15 +58,11 @@
     error OrderNotFound();
     error TooManyAmountRequested();
     error NotEnoughMoneyError();
+    error InvalidRoyaltiesError(uint256 totalRoyalty);
     error FailTransferToken(string reason);
-
-    modifier onlyOwner() {
-      require(msg.sender == ownerAddress, "Only owner can");
-      _;
-    }
 
     modifier onlyAdmin() {
-      require(msg.sender == ownerAddress || admins[msg.sender], "Only admin can");
+      require(msg.sender == this.owner() || admins[msg.sender], "Only admin can");
       _;
     }
 
@@ -83,13 +82,22 @@
         marketFee = fee;
         ctime = timestamp;
 
-        if (marketFee == 0 || marketFee >= 100) {
+        if (marketFee >= 100) {
             revert InvalidMarketFee();
         }
+    }
+
+    /**
+     * Fallback that allows this contract to receive native token.
+     * We need this for self-sponsoring
+     */
+    fallback() external payable {}
 
-        ownerAddress = msg.sender;
-        selfAddress = address(this);
-    }
+    /**
+     * Receive also allows this contract to receive native token.
+     * We need this for self-sponsoring
+     */
+    receive() external payable {}
 
     function getErc721(uint32 collectionId) private view returns (IERC721) {
         address collectionAddress = collectionHelpers.collectionAddress(
@@ -110,36 +118,35 @@
         }
 
         return IERC721(collectionAddress);
-    }
-
-    // ################################################################
-    // Set new contract owner                                         #
-    // ################################################################
-
-    function setOwner() public onlyOwner {
-        ownerAddress = msg.sender;
     }
-
-    // ################################################################
-    // Add new admin                                                  #
-    // ################################################################
 
+    /**
+     * Add new admin. Only owner or an existing admin can add admins.
+     *
+     * @param admin: Address of a new admin to add
+     */
     function addAdmin(address admin) public onlyAdmin {
       admins[admin] = true;
     }
 
-    // ################################################################
-    // Remove admin                                                  #
-    // ################################################################
-
+    /**
+     * Remove an admin. Only owner or an existing admin can remove admins.
+     *
+     * @param admin: Address of a new admin to add
+     */
     function removeAdmin(address admin) public onlyAdmin {
       delete admins[admin];
     }
 
-    // ################################################################
-    // Place a token for sale                                         #
-    // ################################################################
-
+    /**
+     * Place an NFT or RFT token for sale. It must be pre-approved for transfers by this contract address.
+     *
+     * @param collectionId: ID of the token collection
+     * @param tokenId: ID of the token
+     * @param price: Price (with proper network currency decimals)
+     * @param amount: Number of token fractions to list (must always be 1 for NFT)
+     * @param seller: The seller cross-address (the beneficiary account to receive payment, may be different from transaction sender)
+     */
     function put(
         uint32 collectionId,
         uint32 tokenId,
@@ -164,7 +171,7 @@
           revert SellerIsNotOwner();
         }
 
-        if (erc721.getApproved(tokenId) != selfAddress) {
+        if (erc721.getApproved(tokenId) != address(this)) {
           revert TokenIsNotApproved();
         }
 
@@ -182,11 +189,14 @@
 
         emit TokenIsUpForSale(version, order);
     }
-
-    // ################################################################
-    // Get order                                                      #
-    // ################################################################
 
+    /**
+     * Get information about the listed token order
+     *
+     * @param collectionId: ID of the token collection
+     * @param tokenId: ID of the token
+     * @return The order information
+     */
     function getOrder(
         uint32 collectionId,
         uint32 tokenId
@@ -194,10 +204,13 @@
         return orders[collectionId][tokenId];
     }
 
-    // ################################################################
-    // Revoke the token from the sale                                 #
-    // ################################################################
-
+    /**
+     * Revoke the token from the sale. Only the original lister can use this method.
+     *
+     * @param collectionId: ID of the token collection
+     * @param tokenId: ID of the token
+     * @param amount: Number of token fractions to de-list (must always be 1 for NFT)
+     */
     function revoke(
         uint32 collectionId,
         uint32 tokenId,
@@ -239,10 +252,12 @@
         emit TokenRevoke(version, order, amount);
     }
 
-    // ################################################################
-    // Check approved                                                 #
-    // ################################################################
-
+    /**
+     * Test if the token is still approved to be transferred by this contract and delete the order if not.
+     *
+     * @param collectionId: ID of the token collection
+     * @param tokenId: ID of the token
+     */
     function checkApproved(uint32 collectionId, uint32 tokenId) public onlyAdmin {
         Order memory order = orders[collectionId][tokenId];
         if (order.price == 0) {
@@ -251,7 +266,7 @@
 
         IERC721 erc721 = getErc721(collectionId);
 
-        if (erc721.getApproved(tokenId) != selfAddress) {
+        if (erc721.getApproved(tokenId) != address(this) || erc721.ownerOf(tokenId) != getAddressFromCrossAccount(order.seller)) {
           uint32 amount = order.amount;
           order.amount = 0;
           emit TokenRevoke(version, order, amount);
@@ -262,16 +277,47 @@
         }
     }
 
-    // ################################################################
-    // Buy a token                                                    #
-    // ################################################################
+    function getAddressFromCrossAccount(CrossAddress memory account) private pure returns (address) {
+        if (account.eth != address(0)) {
+            return account.eth;
+        } else {
+            return address(uint160(account.sub >> 96));
+        }
+    }
+
+    /**
+     * Revoke the token from the sale. Only the contract admin can use this method.
+     *
+     * @param collectionId: ID of the token collection
+     * @param tokenId: ID of the token
+     */
+    function revokeAdmin(uint32 collectionId, uint32 tokenId) public onlyAdmin {
+        Order memory order = orders[collectionId][tokenId];
+        if (order.price == 0) {
+          revert OrderNotFound();
+        }
 
+        uint32 amount = order.amount;
+        order.amount = 0;
+        emit TokenRevoke(version, order, amount);
+
+        delete orders[collectionId][tokenId];
+    }
+
+    /**
+     * Buy a token (partially for an RFT).
+     *
+     * @param collectionId: ID of the token collection
+     * @param tokenId: ID of the token
+     * @param amount: Number of token fractions to buy (must always be 1 for NFT)
+     * @param buyer: Cross-address of the buyer, eth part must be equal to the transaction signer address
+     */
     function buy(
         uint32 collectionId,
         uint32 tokenId,
         uint32 amount,
         CrossAddress memory buyer
-    ) public payable validCrossAddress(buyer.eth, buyer.sub) {
+    ) public payable validCrossAddress(buyer.eth, buyer.sub) nonReentrant {
         if (msg.value == 0) {
           revert InvalidArgument("msg.value must not be zero");
         }
@@ -296,7 +342,7 @@
         }
 
         IERC721 erc721 = getErc721(order.collectionId);
-        if (erc721.getApproved(tokenId) != selfAddress) {
+        if (erc721.getApproved(tokenId) != address(this)) {
           revert TokenIsNotApproved();
         }
 
@@ -316,26 +362,30 @@
           order.tokenId
         );
 
-        (uint256 totalRoyalty, RoyaltyAmount[] memory royalties) = sendRoyalties(collectionAddress, tokenId, totalValue);
+        (uint256 totalRoyalty, RoyaltyAmount[] memory royalties) = sendRoyalties(collectionAddress, tokenId, totalValue - feeValue);
 
+        if (totalRoyalty >= totalValue - feeValue) {
+          revert InvalidRoyaltiesError(totalRoyalty);
+        }
+
         sendMoney(order.seller, totalValue - feeValue - totalRoyalty);
 
         if (msg.value > totalValue) {
-            // todo, send money to signer or buyer ?
-            payable(msg.sender).transfer(msg.value - totalValue);
+            sendMoney(buyer, msg.value - totalValue);
         }
 
         emit TokenIsPurchased(version, order, amount, buyer, royalties);
     }
 
     function sendMoney(CrossAddress memory to, uint256 money) private {
-      address payable eth;
-      if (to.eth != address(0)) {
-        eth = payable(to.eth);
-      } else {
-        eth = payable(address(uint160(to.sub >> 96)));
-      }
-      eth.transfer(money);
+      address collectionAddress = collectionHelpers.collectionAddress(0);
+
+      UniqueFungible fungible = UniqueFungible(collectionAddress);
+
+      CrossAddressF memory fromF = CrossAddressF(address(this), 0);
+      CrossAddressF memory toF = CrossAddressF(to.eth, to.sub);
+
+      fungible.transferFromCross(fromF, toF, money);
     }
 
     function sendRoyalties(address collection, uint tokenId, uint sellPrice) private returns (uint256, RoyaltyAmount[] memory) {
@@ -355,7 +405,7 @@
     }
 
     function withdraw(address transferTo) public onlyOwner {
-        uint256 balance = selfAddress.balance;
+        uint256 balance = address(this).balance;
 
         if (balance > 0) {
             payable(transferTo).transfer(balance);
--- a/tests/src/eth/marketplace-v2/marketplace.test.ts
+++ b/tests/src/eth/marketplace-v2/marketplace.test.ts
@@ -16,13 +16,15 @@
 
 import {IKeyringPair} from '@polkadot/types/types';
 import {readFile} from 'fs/promises';
-import {EthUniqueHelper, itEth, usingEthPlaygrounds} from '../util';
+import {EthUniqueHelper, SponsoringMode, itEth, usingEthPlaygrounds} from '../util';
 import {makeNames} from '../../util';
 import {expect} from 'chai';
 import Web3 from 'web3';
 
 const {dirname} = makeNames(import.meta.url);
 
+const MARKET_FEE = 1;
+
 describe('Market V2 Contract', () => {
   let donor: IKeyringPair;
 
@@ -43,10 +45,26 @@
           fsPath: `${dirname}/../api/UniqueNFT.sol`,
         },
         {
+          solPath: '@unique-nft/solidity-interfaces/contracts/UniqueFungible.sol',
+          fsPath: `${dirname}/../api/UniqueFungible.sol`,
+        },
+        {
           solPath: '@openzeppelin/contracts/utils/introspection/IERC165.sol',
           fsPath: `${dirname}/../../../node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol`,
         },
         {
+          solPath: '@openzeppelin/contracts/access/Ownable.sol',
+          fsPath: `${dirname}/../../../node_modules/@openzeppelin/contracts/access/Ownable.sol`,
+        },
+        {
+          solPath: '@openzeppelin/contracts/utils/Context.sol',
+          fsPath: `${dirname}/../../../node_modules/@openzeppelin/contracts/utils/Context.sol`,
+        },
+        {
+          solPath: '@openzeppelin/contracts/security/ReentrancyGuard.sol',
+          fsPath: `${dirname}/../../../node_modules/@openzeppelin/contracts/security/ReentrancyGuard.sol`,
+        },
+        {
           solPath: '@openzeppelin/contracts/utils/introspection/ERC165Checker.sol',
           fsPath: `${dirname}/../../../node_modules/@openzeppelin/contracts/utils/introspection/ERC165Checker.sol`,
         },
@@ -72,7 +90,7 @@
         },
       ],
       15000000,
-      [1, 0],
+      [MARKET_FEE, 0],
     );
   }
 
@@ -90,63 +108,135 @@
   });
 
   itEth('Put + Buy [eth]', async ({helper}) => {
-    const marketOwner = await helper.eth.createAccountWithBalance(donor, 600n);
+    const ONE_TOKEN = helper.balance.getOneTokenNominal();
+    const PRICE = 2n * ONE_TOKEN;  // 2 UNQ
+    const marketOwner = await helper.eth.createAccountWithBalance(donor, 60000n);
     const market = await deployMarket(helper, marketOwner);
+    const contractHelpers = helper.ethNativeContract.contractHelpers(marketOwner);
+
+    // Set external sponsoring
+    await contractHelpers.methods.setSponsor(market.options.address, marketOwner).send({from: marketOwner});
+    await contractHelpers.methods.confirmSponsorship(market.options.address).send({from: marketOwner});
 
+    // Configure sponsoring
+    await contractHelpers.methods.setSponsoringMode(market.options.address, SponsoringMode.Generous).send({from: marketOwner});
+    await contractHelpers.methods.setSponsoringRateLimit(market.options.address, 0).send({from: marketOwner});
+
     const {collectionId, collectionAddress} = await helper.eth.createNFTCollection(marketOwner, 'Sponsor', 'absolutely anything', 'ROC');
-    const collection = await helper.ethNativeContract.collection(collectionAddress, 'nft', marketOwner);
+    const collection = helper.ethNativeContract.collection(collectionAddress, 'nft', marketOwner, true);
+
+    // Set collection sponsoring
+    await collection.methods.setCollectionSponsor(marketOwner).send({from: marketOwner});
+    await collection.methods.confirmCollectionSponsorship().send({from: marketOwner});
 
-    const sellerCross = await helper.ethCrossAccount.createAccountWithBalance(donor, 600n);
+    const sellerCross = helper.ethCrossAccount.createAccount();
     const result = await collection.methods.mintCross(sellerCross, []).send();
     const tokenId = result.events.Transfer.returnValues.tokenId;
     await collection.methods.approve(market.options.address, tokenId).send({from: sellerCross.eth});
 
-    const putResult = await market.methods.put(collectionId, tokenId, 1, 1, sellerCross).send({from: sellerCross.eth});
+    // Seller has no funds at all, his transactions are sponsored
+    const sellerBalance = await helper.balance.getEthereum(sellerCross.eth);
+    expect(sellerBalance).to.be.eq(0n);
+
+    const putResult = await market.methods.put(collectionId, tokenId, PRICE.toString(), 1, sellerCross).send({
+      from: sellerCross.eth, gasLimit: 1_000_000,
+    });
     expect(putResult.events.TokenIsUpForSale).is.not.undefined;
+
+    // Seller balance are still 0
+    const sellerBalanceAfter = await helper.balance.getEthereum(sellerCross.eth);
+    expect(sellerBalanceAfter).to.be.eq(0n);
+
     let ownerCross = await collection.methods.ownerOfCross(tokenId).call();
     expect(ownerCross.eth).to.be.eq(sellerCross.eth);
     expect(ownerCross.sub).to.be.eq(sellerCross.sub);
 
-    const buyerCross = await helper.ethCrossAccount.createAccountWithBalance(donor, 600n);
-    const buyResult = await market.methods.buy(collectionId, tokenId, 1, buyerCross).send({from: buyerCross.eth, value: 1});
+    const buyerCross = await helper.ethCrossAccount.createAccountWithBalance(donor, 10n);
+
+    // Buyer has only 10 UNQ
+    const buyerBalance = await helper.balance.getEthereum(buyerCross.eth);
+    expect(buyerBalance).to.be.eq(10n * ONE_TOKEN);
+
+    const buyResult = await market.methods.buy(collectionId, tokenId, 1, buyerCross).send({from: buyerCross.eth, value: PRICE.toString(), gasLimit: 1_000_000});
     expect(buyResult.events.TokenIsPurchased).is.not.undefined;
+
+    // Buyer pays only value, transaction use sponsoring
+    const buyerBalanceAfter = await helper.balance.getEthereum(buyerCross.eth);
+    expect(buyerBalanceAfter).to.be.eq(10n * ONE_TOKEN - PRICE);
+
     ownerCross = await collection.methods.ownerOfCross(tokenId).call();
     expect(ownerCross.eth).to.be.eq(buyerCross.eth);
     expect(ownerCross.sub).to.be.eq(buyerCross.sub);
   });
 
   itEth('Put + Buy [sub]', async ({helper}) => {
-    const PRICE = 1n;
+    const ONE_TOKEN = helper.balance.getOneTokenNominal();
+    const PRICE = 2n * ONE_TOKEN;  // 2 UNQ
     const web3 = helper.getWeb3();
     const marketOwner = await helper.eth.createAccountWithBalance(donor, 600n);
     const market = await deployMarket(helper, marketOwner);
+    const contractHelpers = helper.ethNativeContract.contractHelpers(marketOwner);
+
+    // Set self sponsoring from contract balance
+    await contractHelpers.methods.selfSponsoredEnable(market.options.address).send({from: marketOwner});
+    await helper.eth.transferBalanceFromSubstrate(donor, market.options.address, 10n);
+
+    // Configure sponsoring
+    await contractHelpers.methods.setSponsoringMode(market.options.address, SponsoringMode.Generous).send({from: marketOwner});
+    await contractHelpers.methods.setSponsoringRateLimit(market.options.address, 0).send({from: marketOwner});
 
     const {collectionId, collectionAddress} = await helper.eth.createNFTCollection(marketOwner, 'Sponsor', 'absolutely anything', 'ROC');
-    const collection = await helper.ethNativeContract.collection(collectionAddress, 'nft', marketOwner);
+    const collection = helper.ethNativeContract.collection(collectionAddress, 'nft', marketOwner, true);
+
+    // Set collection sponsoring
+    await collection.methods.setCollectionSponsor(marketOwner).send({from: marketOwner});
+    await collection.methods.confirmCollectionSponsorship().send({from: marketOwner});
 
-    const [seller] = await helper.arrange.createAccounts([600n], donor);
-    const sellerMirror = helper.address.substrateToEth(seller.address);
+    const seller = helper.util.fromSeed(`//Market-seller-${(new Date()).getTime()}`);
     const sellerCross = helper.ethCrossAccount.fromKeyringPair(seller);
+
+    // Seller has no funds at all, his transactions are sponsored
+    {
+      const sellerBalance = await helper.balance.getSubstrate(seller.address);
+      expect(sellerBalance).to.be.eq(0n);
+    }
+
     const result = await collection.methods.mintCross(sellerCross, []).send();
     const tokenId = result.events.Transfer.returnValues.tokenId;
-    await helper.nft.approveToken(seller, collectionId, tokenId, {Ethereum: market.options.address}, 1n);
+    await helper.nft.approveToken(seller, collectionId, tokenId, {Ethereum: market.options.address});
 
     await helper.eth.sendEVM(seller, market.options.address, market.methods.put(collectionId, tokenId, PRICE, 1, sellerCross).encodeABI(), '0');
+    // Seller balance is still zero
+    {
+      const sellerBalance = await helper.balance.getSubstrate(seller.address);
+      expect(sellerBalance).to.be.eq(0n);
+    }
     let ownerCross = await collection.methods.ownerOfCross(tokenId).call();
     expect(ownerCross.eth).to.be.eq(sellerCross.eth);
     expect(substrateAddressToHex(ownerCross.sub, web3)).to.be.eq(substrateAddressToHex(sellerCross.sub, web3));
 
     const [buyer] = await helper.arrange.createAccounts([600n], donor);
+    // Buyer has only expected balance
+    {
+      const buyerBalance = await helper.balance.getSubstrate(buyer.address);
+      expect(buyerBalance).to.be.eq(600n * ONE_TOKEN);
+    }
     const buyerMirror = helper.address.substrateToEth(buyer.address);
     const buyerCross = helper.ethCrossAccount.fromKeyringPair(buyer);
-    await helper.eth.transferBalanceFromSubstrate(donor, buyerMirror, 1n);
-    //TODO: change balance check to helper.balance.getSubstrate when implementation of sendMoney will be fixed in contract
-    const sellerBalance = BigInt(await web3.eth.getBalance(sellerMirror));
+    await helper.eth.transferBalanceFromSubstrate(donor, buyerMirror, PRICE, false);
+
+    const buyerBalanceBefore = await helper.balance.getSubstrate(buyer.address);
     await helper.eth.sendEVM(buyer, market.options.address, market.methods.buy(collectionId, tokenId, 1, buyerCross).encodeABI(), PRICE.toString());
-    const sellerBalanceAfterBuy = BigInt(await web3.eth.getBalance(sellerMirror));
+    const buyerBalanceAfter = await helper.balance.getSubstrate(buyer.address);
+    // Buyer balance not changed: transaction is sponsored
+    expect(buyerBalanceBefore).to.be.eq(buyerBalanceAfter);
+
+    const sellerBalanceAfterBuy = BigInt(await helper.balance.getSubstrate(seller.address));
     ownerCross = await collection.methods.ownerOfCross(tokenId).call();
     expect(ownerCross.eth).to.be.eq(buyerCross.eth);
     expect(substrateAddressToHex(ownerCross.sub, web3)).to.be.eq(substrateAddressToHex(buyerCross.sub, web3));
-    expect(sellerBalance + PRICE).to.be.equal(sellerBalanceAfterBuy);
+
+    // Seller got only PRICE - MARKET_FEE
+    expect(sellerBalanceAfterBuy).to.be.eq(PRICE * BigInt(100 - MARKET_FEE) / 100n);
   });
 });
--- a/tests/src/eth/tokenProperties.test.ts
+++ b/tests/src/eth/tokenProperties.test.ts
@@ -561,10 +561,10 @@
     itEth.ifWithPallets(`[${testCase.mode}] Can't be multiple set/read for non-existent token`, testCase.requiredPallets, async({helper}) => {
       const caller = await helper.eth.createAccountWithBalance(donor);
 
-      const properties = Array(5).fill(0).map((_, i) => { return {key: `key_${i}`, value: Buffer.from(`value_${i}`)}; });
-      const permissions: ITokenPropertyPermission[] = properties.map(p => { return {key: p.key, permission: {tokenOwner: true,
+      const properties = Array(5).fill(0).map((_, i) => ({key: `key_${i}`, value: Buffer.from(`value_${i}`)}));
+      const permissions: ITokenPropertyPermission[] = properties.map(p => ({key: p.key, permission: {tokenOwner: true,
         collectionAdmin: true,
-        mutable: true}}; });
+        mutable: true}}));
 
       const collection = await helper[testCase.mode].mintCollection(alice, {
         tokenPrefix: 'ethp',