Also betting big on sin-driven sales, Dollar General has been rolling out wine and beer to more stores.

FORBES: Dollar Chains Tap Smokes, Booze to Drive Sales, Fight Wal-Mart's Small-Format Stores

He started at age 12, when he had a summer job as an assistant to the truck drivers delivering Polar beer to small shops and liquor stores in Caracas.

FORBES: The beer baron

Think appliances, furniture, banks, department stores, chocolate bars, beer, luxury goods, etc.

FORBES: Often, Cause-Marketing Beauty Is In The Eye Of The Beholder

But factoring in cash discounts for the beer, snacks and other items sold inside the stores is "a lot more complicated, " partly because of the range of merchandise, says Fran Duskiewicz senior executive vice president of the chain.

WSJ: Bank Fees Squeeze Retailers