If you never ask questions you will never know the answers, so I have to say: There is no need to feel dumb because you may not know everything.
You can get a lot of money for quilts based on what the market will bear. I, too, will be interested in seeing others' responses. My quilts are charity quilts, and I wouldn't know what to charge for a quilt if I ever decided to sell one,
but I know others are on here who do know...
basically, I just jumped in to let you know that you asked a good question, and have no fear .... more experienced minds than mine will help you out <g>