That's a very pretty quilt top you made! I think I would base my price on what other quilts that size and difficulty, which are handquilted, are selling for. Of course, it also depends on the difficulty and density of the handquilting you do on it. The Amish quilts are all handquilted, and mostly treadle-machine pieced, so that may be a good place to start, I'd think. Maybe Google "Amish quilts for sale"? You could also check on eBay, but sometimes prices on eBay are all over the place on quilts and quilt tops, from what I've seen. Good luck to you with your sale!