Pricing is very difficult as it varies by areas of the country as well as by the shows. At a craft show as a school fund raiser, you may not be able to get as high a price as you can at a more exclusive show. Of course, table fees vary a lot, too. More exclusive shows charge far more. You really just have to check other tables or try a price you feel is reasonable.
People are hard to figure. I used to do shows with my dil. She did beautiful intricate work and yet my plain old potholders sold much better than her items. Her items were wonderful and very reasonably priced but people aren't always looking for the intricate work. They sometimes want practical I guess. Bottom line -- if someone figures out the perfect item, price and location, please let us all know. That was one reason I decided to go to wholesale. I now sell all I make and I don't have to worry about the weather the day of the show or worry I have the right designs with me.