This is a Bad Thing. Sure when I do grocery shopping I keep an eye out for bargains, but I also don't want to have my buying choices overly shaped by the retailer so I end up spending money on stuff I don't really want. I especially don't want to deal with coupons and buy-this-get-that offers. Planning out what to eat and remembering to get what I need is enough mental effort without having to spend time on discountmaxxing which is really just another kind of advertising.

acceptable range [...] Cheese $3 / lb

I don't know what kind of cheese you're getting for $3/lb but I'm pretty sure it isn't good for you.