Around here, PJ, all of the stores pose limits. (Central Indiana).
Because I am only shopping for myself (husband is working overseas), I am content with what I can get for free or nearly so.
A lot of what I eat is non-coupon, fresh fruits, veggies, meats, so I mostly concentrate on toiletries and cleaning supplies.
I am fascinated with your stories, however, and am always glad to see a true success in couponing!
Some stores treat it like a crime scene when you get lots of stuff cheap/free via coupons. Other stores actively encourage couponing. One store I simply place an order for hundreds of items and they hold them for me until I show up. They are smart since coupons are the same as money. If I owned a food store I would actively encourage couponing. I gave that store this past week $600 worth of sales via coupons.
All covered by coupons if you know how to work it. The last time I checked there are no coupons for buying computers yet this very laptop I am posting with I got for FREE via coupons.