I haven't read every single post, but I've read many.
I do sell my quilts once in a while and mostly they are baby quilts. I charge between $30 and $50 depending on size (usually 38" square to 48" square). These are the simplest of patterns, usually four 12" blocks, sashing and one or two borders, simple machine quilting, and a binding.
I always add a label and if the buyer knows the baby's name, I'll add that. People seem to love that idea.
I've made and sold quilted place mats (custom to fit a camper table) and candle mats ($20 each).
I figure all I'm doing is getting more fabric money for myself. I don't try to make money selling quilts.
I make baby quilts for co-workers and for charity and once in a while a friend will have a baby.
Our quilt show just ended and many of the twin/double quilts were in the several hundred dollar range. I think that's probably typical for my (economically depressed and rural) area.
Just thought I'd throw my 2 cents in....