Checking your own audience
Issue 3 similar NFTs, and set the price equivalent to $10 for one, $100 for the other, and $1000 for the third. Segment your own audience so that one third show $10 NFTs, another $100, and a third $1000. The characteristics of each of the segments must match (gender, age, interest group and other criteria). Look at the reactions. If you managed to sell NFTs for $1000, then you can sell NFTs for $1000 in the future.