The buying and selling process on the Stackspace NFT exchange works similarly to most other NFT exchanges. To buy an NFT on Stackspace, users must first create an account, verify their identity, and fund their account with the cryptocurrency of their choice. Once they have done so, they can search the marketplace for NFTs that interest them, place bids or make offers, and complete the transaction once it has been accepted by the seller. The process for selling an NFT is similar, but involves listing the NFT for sale, setting the asking price, and waiting for a buyer to make an offer or place a bid. Once the transaction is complete, the NFT is transferred to the buyer's account, and the funds are credited to the seller's account.