The costs to develop an NFT can vary greatly depending on the type of market. The developer must create code to enable the NFT to function for free. This can cost anywhere from $7 to $150 , depending on the complexity of the project. It is up to the creator what format an NFT takes.
Read moreHow do I know how much my NFT will be worth?
To track and verify your own NFT transactions, whether you bought or sold an NFT, you can go to Etherscan.io, to search by address, transaction hash, block, token and ens , while sites like CryptoSlam.io allow for NFT sales history, collection rankings, market data and specific projects.
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