the nice thing about selling quilts is, you only need ONE buyer for each quilt, who is willing to pay the price. Not like you are creating a line of jewelry or pottery and wondering what would be a good price. Don't lower your prices unless you just want to get rid of the quilt.
I have sold many quilts over the years, sometimes the buyers surprise you - like, MEN have bought several of my quilts. Also sometimes someone looks like they don't have 2 nickels to rub together, they will buy a quilt without haggling.