Look for the option on eBay to search for only completed sales. That way you can see what quilts have actually sold for. I agree with you - you may have spent 200 hours and $300 on making a quilt, but once it's done the money and time are spent. Also you have learned from that quilt and had fun making it. It may be that getting $200 for that quilt would be more satisfying than letting it sit unused forever. On the other hand, you might be able to make profit, in $ if not in time.