I agree with the others...I wouldn't let it go for less than $950-$1000 myself...I have seen lots of quilts priced way more than that and they are nowhere near as spectacular as yours...and they didn't win any ribbons either.
Now...alll the comments are being said not knowing if you "have to have" the money...I'm assuming you don't, but it would be nice to have it to buy more fabric.