We have found that you can't get enough for any quilt by setting a price or even auctioning them off. We've made the most money on quilts by raffling them off.
I've had a hand quilted wall hanging sell for $25.00 (silent auction), and a machine quilted bed quilt raise $1600.00 (raffle).
This quilt is a beauty. I sure hope you can find a way to raise the money you need with it.