1. Yo can buy and sell NFTs at the same time.
2. The process is the same than for doing it separately.
3. In this case the total amount to be pay or receive will be the difference between the value of the NFTs to be sell and buy.

→ If you have any difficulties of any sort, please DMs us about it, we’ll be happy to help, and also glad for understanding how to improve our usability: https://twitter.com/GalleyExchange