just a note on craft shows - if someone comes around while you are selling at a show and hands you a flyer about THEIR show coming up - I would stay away. IMO when they have to solicit crafters to fill their show, that means they do not have crafters coming back year after year, in other words, a dud.
A successful show does not have to go actively looking for crafters.
$50 sounds reasonable if they get a lot of people, and you have small items that you think will sell reasonably well. Think of it as a learning experience. Good luck!