While this does seem a little shady, it's a ploy used so often by companies trying to get you in their "doors." I know I've gotten e-mail with coupons for various amounts or goods, only to find out on the site that I also have to purchase two adult dinners, or coupons only good Monday through Thursday, or the ubiquitous "$10 off $20." It's a Buyers Beware world, and if it seems too good to be true, think about it.