Yep...I know what you mean..I did the same thing, a couple weeks ago.. I won't shop there again for material.
I found a place online thats great. www.fabric.com. I got the kona solid cottons, for $3.48 per yard, they were on sale, the white was 4.48 per yard....they are so soft, and quality cottons...nothing like what I got at Joanne's....I took theirs back..
If you watch, you can get some deals there, if you spend $35.00, shipping is free, to and from, if you need to send anything back.