You can sell NFTs through marketplaces like
OpenSea, where you'll need to log in with your crypto wallet. This time, you will need cryptocurrency to pay the transaction commission. In the United States, the easiest way to buy cryptocurrency is through
Coinbase, a simple-to-use US dollar to a cryptocurrency exchange for Bitcoin, Ethereum, and several other crypto currencies. Marketplaces like
Opensea and
Rarible allow purchase of cryptocurrency from their interfaces.