You need to look at the tops before you make any commitments. They may not be "fixable" without totally remaking them, and maybe not even then. Then, try to figure out how many hours it would take you to do one. Be GENEROUS, not conservative. Figure up the cost of supplies, such as thread, backing, batting, etc. Then decide on a per-hour cost and do the math. And remember, your skill is worth much more than minimum wage, so the $10-15 and hour seems reasonable to me. Good luck.