quiltingbee12, you might check out other craft shows in your area to see what the competition is, for the items you're thinking of making. It would give you an idea of what the local market will bear.
That said, I don't think your prices are too high!
Still, you have to be aware that some of the shoppers will ONLY be interested in price... and also that there are some crafters who don't care if they make a profit, as long as they make their rent back and cover their supplies. Other shoppers will truly appreciate the time you've spent.
You can always start the price higher, and lower it during the day at the show. Or... offer a discount if they buy a pair of potholders, or a couple of mini-quilts. This offers you the opportunity to enter into a conversation with your customers, and you may be able to get a sense of what they think about the price (even if they don't buy).
Also... since I guess you're new to the selling end of things... you can do a little "market research" at the show. Position the price tags so that the customer has to touch the item to read the tag. If you have four similar items hanging next to each other, the one the customer likes best - not the closest one - is the one they will reach for the price tag on.