I have charged $20 a block with the other person paying for all supplies. And learned very quickly that I cut the Tshirts not the client. The first one I did she cut all the Tshirts and that was a very big problem since there was no seam allowance.that one was a gift so there was no charge for that one. I felt comfortable at this price for all the work that goes into making one. with 20 blocks. so the entire quilt was $400 for myself.