So far, the most I have spent(I think) per yard is $10.95 for a large Japanese print with cats that I couldn't leave behind. If a quilt requires specific fabrics like alot of the patterns in the current quilt magazines, I will try to rework it with Joann's fabrics or just not do it. I have bought kits that are over $100 and quilt shop BOMs with sashing kits, etc... that are usually in the $300 range total with the cost spread out over time. I usually top out supplies on a quilt to approximately $100-150 for the top/binding, batting is usually $20 (use coupons at Joanns) and $40 for backing(use 108inch wide muslin). I use grey thread for all piecing (colored for applique of course) which I buy in bulk. Quilting thread depends and usually tops out at $10-15. These costs are approximate since I think I would faint if I actually costed everything out as I did it.