Your work is lovely and I think your prices are very reasonable. But as quilters, we on this board know how expensive it is to make a quilt. People that don't make quilts have no idea of the cost of materials plus all the time involved, and are so often not willing to pay what it's worth. I would try Etsy as well, you might have better luck there.
Good luck, I hope you can sell some of your beautiful creations!