Years ago, our local Fred Meyer had Papa Murphy's coupons printed on the backs of the receipts. They were pretty much the same deal as the Papa Murphy's coupons that came in the weekly coupon mailers/newspaper, so I didn't pay too much attention to them, but then I noticed that while the mailer coupons were inching up in price ($7 for a one topping, for example, and only $2 off of a large pizza), the ones on the back of the receipts still had a $6 one-topping coupon, and $3 off any size pizza. They didn't have an expiration date, so I started hoarding them. Good thing too, because eventually the receipts caught up with the regular coupons, and then they quit printing them at all!
I am also terrible about pulling receipts out of the bottom of the grocery bag after putting the groceries away. I'm already tired from buying the groceries, hauling them home, and putting them away--dealing with the receipts is just a step too far ;). The benefit of this is that for a while,when cleaning out the basement or the pantry, I would find old receipts with coupons on the back tucked into the bottom of old grocery bags. Score!
But. I'm not satisfied with JUST having the lowest possible coupon price for my pizza. Because I have a problem. The Boy likes Hawaiian (Canadian bacon and pineapple) pizza. Little Sister will only eat cheese pizza. If you order half-Hawaiian, half-cheese, you pay for a two-topping pizza. So here's what I do--I order a half-Canadian bacon, half-pineapple pizza. I pay $6 for my large one-topping pizza, then before baking, I move all of the meat over to the pineapple side. Well, actually I spread out the pineapple a little so that the Hawaiian side is a little more than half--The Boy eats more than Little Sister does.
So! That's how I get my $12.00 pizza for six bucks!