We’ve all had to throw away leftovers or cuts of meat and cheese that spent a little too much time in the fridge or freezer, but vacuum sealing your foods can keep them safe from freezer burn pretty much indefinitely, and dramatically extend their shelf life everywhere else.

It sounds like an expensive proposition, but today, Amazon’s selling this well-reviewed FoodSaver V3240 Starter Kit for just $71, within a few cents of an all-time low. Of course you can use this to store meats in the freezer for a long time, but it can also keep cheese from molding, lettuce from wilting, or cookies from going stale, just to name a few examples. Think about how much food you throw away, and you’ll get a sense of just how quickly this purchase could pay for itself.