5955 N Expressway Brownsville. (956) 546-5586. 77 Flea Market has become a mall of its own here in the valley. Come enjoy good eats, awesome lemonade, and do some shopping while you're at it! 77 Flea Market is outdoors, so you get to enjoy tropical weather while you shop. It's a great place to bring your family. There is no better way to spend a weekend in Brownsville, TX. "One man's trash is another man's treasure."