I really like how easy it was for my husband & myself (who are relatively new at this) set up our first sale! We were able to get all of what we wanted from each vendor without much trouble or confusion as far setting everything goes.
The only thing that has been difficult thusfar would be creating multiple listings within one category -- which can become confusing if there's too many categories/sellers listed under 1 listing. So when looking through previous sales reports where someone bought something via another seller who had sold their item elsewhere they may not know whether those items should go together so need more details than just simply "sold". This helps us keep track while also keeping customers happy by offering them choices along wtihout having to do double work once things sell out because some people don't want 2 different styles available but rather have enough options given to make sure everyone.