Aluminum foil at the dollar store is about half the price of the supermarket, but you get about a tenth as much. It's fine if you truly know you'll never need

Aluminum foil at the dollar store is about half the price of the supermarket, but you get about a tenth as much. It's fine if you truly know you'll never need more, but it's not like aluminum foil ever goes bad. Most of the time you're better off spending the extra dollar for 10x as much.