I would be upset too - such a beautiful quilt so obviously undervalued. We had a bake and craft sale at work last week and had some small quilted items. One was a wall hanging and it went for $35. The other was a basic throw and while it was folded on the table, those interested could open it up and then bid. Not sure what its final amount was.
Another gal had made some pretty jewelry and someone put $10 on the sheet which I thought was rude. (It's for a fund raiser folks!!!!) So I upped the anty. She was pissed at me. So much for being charitable.