A word of caution if you’re looking at new merch. Counterfeiting has become a huge issue. In May U.S. Immigration and Customs Enforcement found $30 million in fakes at two Massachusetts markets, reporting: “Authorities confiscated enough fake designer purses, clothing and pirated DVDs and CDs from two flea markets on May 10 to fill three tractor trailers.”

So keep it on the up-and-up with these seven tips for finding the best flea market finds and hidden gems.