They expire I think Nov 1st, but there are several really good coupons that you can make up the cost in 1 purchase. I'm not sure if these will have them, but the one I got as a gift had a $5 off any steak & shake purchase card on the outside. You also get access to printable coupons.
I tried to go through ebates, but then it wouldn't give me free shipping. The e-mail did say not valid with other offers, so maybe that's why. I figured I'd rather save the $2 now then get $2.50 later.