I like the per inch deal and also would consider thinking about the cost per size of the quilt. I guess I would have to say I do mitered binding only because I'm not that experienced on scalloped edges or curvy! I wouldn't do it for a flat rate of $20, this quilt took 4 hours and it wouldn't be worth my time. I love all the ideas about how to go about this venture. I'm just looking for a little extra cash, I don't expect to make a killing on anything.