This supermarket shopping tip could save you a lot of money

We've featured lots of supermarket shopping tips here because who doesn't love to say a little money? But here's a tip for one our favorite grocery stores that you might not know about, and it just so happens to be at one of our favorite grocery stores, Trader Joe's. Now, you might be thinking it's their generous return policy, which yes, is so, so awesome, but nope, that's not it! This little-known trick would will actually save you time and money, before you even leave the store. And if you don't shop at Trader Joe's, keep your eye out on these sneaky supermarket tricks that could be costing you rather than saving