Side note: I been getting the Domino Sugar at Walgreens too. LOL.
I base my stocking up more on the seasonal sales rather than a certain price. For instance, canned goods get the cheapest around Thanksgiving time, baked goods around the holidays, condiments around July 4th time, etc. For cereal, just myself and DD eat it and neither of us are picky. So, I usually wait until the cereal goes on sale to where I can get it for $1.00 or so. For instance, I just got a box of Special K for 50cents at Kmart during one of their double coupon weeks (one of the few good deals I could find). And also, for cereal, I've gotten some great deals at $1.00 per box or cheaper on brand names like Cherios and Raisen Bran by shopping recent sales at the drug stores and combining them with my coupons. For produce, there are a few things that I like to put up in the freezer (such as berries, green onions, etc.) that I will buy in season and freeze enough to last us several months. For produce, I'm pretty lucky to receive the occasional hand-out from a neighbor or family member from their garden.
As far as meat goes, I don't have much luck finding good deals on meat around here. And what you get is pretty low-grade IMHO. I do try to buy it in bulk at Sams but I've figured it out before and if you figure out what you are paying per pound it really isn't much cheaper than just buying it in smaller packages at Walmart.
Have a blessed day,
Julie