When you’re trying to squeeze the most out of a buck and the Walmarts and Target’s close by are a bit too luxurious, you can always count on Dollar General. For 70 years, thrifty customers have been able to buy their groceries at the one-stop-dollar shop and not break the bank in the process. But at some point, you gotta start wondering how they can sell everything for such low, low prices and not only stay in business, but seemingly open new stores as frequently as one opens a door?