"there is seldom a reason to buy from them at full price" AGREE
But I watch people do it every time I'm in there. Notably their coupons offering discounts for 'items under $10' offer discount that generally accord with the advertised sales price of the included item(s). That is, the coupons reflect the significant markup of the lower-priced items and basically are simply a different way to off them at a profitable discount. That said, the 'any item' or 'any item at or less than x' coupons make it easier to collect the odd things the last sale of which you may have missed.
I get their emails. But they (recently at least) have advertised coupons in the email subject line but not included copies in the body of the email with 'the rest of the specific item coupons.'
The also dropped paper copies of their ads in favor of Internet Media because 'everyone' has a cell phone.
I don't, so have to write myself a note, copying the coupon numbers and as often as not forget to include this, that or even the other on my handwritten list.