My partner owns a small online business selling art and custom decks of cards. Right now she primarily sells on Etsy. She's considering getting on Amazon as well, but Amazon is a very annoying platform to sell on.

Conditional on joining Amazon as a seller, will she think this was worth it?

This market resolves to N/A if she never joins Amazon, YES if she thinks it was worth it at the close date, and NO if she doesn't.