After you purchased an NFT on NFTLocker you can list it for sale on our marketplace. You can also sell your NFT on Opensea.
Yes. All NFTs minted via NFTLocker do have a royalty in the contract. Other marketplaces also typically charge a transaction fee.
Yes. NFTLocker does offer services to collectors looking to resell their NFT. These services include marketing to our existing users / collectors as well as appraising the value of an NFT.