Big-box stores are beautiful once they have nothing to sell. By Kelly Karivalis Every time I visit my local shopping mall, I risk being swallowed into the ground. The Berkshire Mall in Wyomissing, Pa.

Not all Dollar Trees are created equal—so I’m showing you how to shop like a pro. From the best days to visit to the secret sections worth checking, these tips will change how you hunt for bargains.

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