what would you do?

How would you approach pricing quilts (various sizes of lap quilts) for a craft booth at a church craft show this Spring? Should they be a bit underpriced from what would be charged in a regular "store"? There will be many booths for people to spend their money and I don't think people come prepared to spend big bucks. Since we make the quilts and hardly ever actually purchase a quilt ouselves we don't really know what to charge. We know we won't get the full worth of the quilts and consider our time and materials to be a donation, but we don't want to give them away either.