I like their fabric better than Joann's. It's often on sale (30% off), but there's usually a coupon (40% off any one item) and you can show it to the employee writing up your order so that the reg. price is recorded instead of the sale price so you can use the coupon. Go to HobbyLobby.com and click on the "in store specials" link to get it. Usually the coupon is 40% off any one item, but sometimes it rotates with 40% off a specific brand or type of item.
As the others said, they don't have nearly the quantity of fabric as Joann's. However, I think what they have is better - both in the quality of the fabric and in the colors/prints they offer.