I use a few at the commissary, but here in our town we only have United, Aldis, Walmart and Jumbo. Jumbo is an OK. family owned business and they get most of my NON-commissary shopping.
SO, bottom line..there is so little competition that they rarely have good sales and coupons don't amount to much!
We also shop the NON coupon sections most..ie: produce, dairy, meat!