Buying used furniture is a savvy way to save money and find unique pieces at auctions or flea markets. However, the "deal of a lifetime" can quickly become a health hazard or a costly mistake. 

To help you shop smart, here are seven items to avoid when buying secondhand.

1. Used Mattresses and Bedding

Purchasing used mattresses and bedding is generally not recommended due to hygiene concerns. An old mattress can house over 16 million

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