Another item that is quick & easy to make is a changing pad (could even bundle it with burp cloths & maybe a bib -- though the bib would require making/buying bias tape).
I would estimate the cost of your materials, add in an hourly rate (I charge $18/hr for a large metro area, but perhaps it would be slightly less in your area, or slightly more if people love homemade items), and be sure to cover the cost of bringing your items to market (cost for booth, renting table/chairs, display materials, bags, receipts & if you are willing to take PayPal or credit cards the amount you'll need to pay to them, plus planning and design time).
Unfortunately, as Tartan said, it depends on the area & the craft show. I have been to craft shows where nothing over $10 will sell. It doesn't matter if it is an organic cotton, hand pieced, hand quilted, award winning bed quilt, people will either skip the booth or very rudely ask if you would take $10 for it. On the other hand, we have other holiday shows nearby where you would be hard-pressed to find a single item under $50 (usually those are the hand-blown glass Christmas ornaments) & some items can go for north of $10K. So I guess the moral of my story is "know your market". If people coming to the show where you're selling appreciate art & quality hand-crafted goods, then follow the advice on the link mckwilter posted. If it is the kind of show where people are ONLY looking for ugly hostess gifts that will likely fall apart before the new year, then you probably have to keep everything but the quilted totes to $5-10 and the quilted totes maybe around $15-20. Personally, I avoid those kind of "craft fairs" -- both as a seller and as a buyer. I would rather sit and enjoy a cup of cocoa with someone than get some crappy, overpriced $5 gift my 2-year-old niece could have made (rolling my eyes as I remember the time I saw someone selling reindeer clothespins for $5 each. ugh! but, bless her heart, she sold over 75 of them and made a killing). I really hope you can connect with a quality group that values quilted products. Good luck!
