Ok, honestly, I am 2 and 10. But I have learned to not use coupons in the self-serve lane because they ALWAYS lock up the register, I don't know why. And then you have to wait for a non-existent cashier to come and unlock the register, as the light flashes annoyingly. I don't use coupons every grocery trip, but when they are having 10/$10 or other good stock up sales, I usually have a lot of coupons. 

I am really starting to love the  Giant Eagle eOffers, that go directly on the Giant Eagle card. Also, when I am up in the Sandusky area, I like using the mPerks at Meijer.