Frequently those huge containers are not a real deal; however, I've read comments online that many parents of large families appreciate being able to buy ONE large container of a specific item, rather than a dozen small ones at the local grocery store.
I would NOT buy all that meat at one time in one store; were I planning to go on a high protein meat based diet, I would scour the local grocery ads every weekend, and learn which store had the best deals on meat -- and THEN I would buy at least three times what I needed of the best sale meat available that week.
We purchase all our baking needs for the rest of the year, between November and April --- stores have some great deals starting in early November - for Thanksgiving and extending through Easter/Passover in March/April. Typically, there are lots of coupons in the Sunday paper inserts for such items, at the same time period.
I was going to buy a ten pound package of sugar last week -- but after I examined the price per pound, I realized it was cheaper to purchase granulated sugar in a small 4 pound sack.
So you must keep an eye on TRUE prices; make no assumptions....
However, some manager's are jerks. I wanted a mark down on some BOGO meat because it was expiring the very next day but the manager told me I should be satisfied with the BOGO deal. Soooo... I did buy some BOGO meat expriring a week away. And who the hell would buy the original BOGO meat when they could buy with later expiration dates for the same price?