As New York Magazine declared in August 2006, Hell’s Kitchen Flea Market “has settled in for good.” Foot traffic at Hell's Kitchen Flea Market, running the block of West 39th Street between 9th and 10th Avenues, is at an all-time high. It's offering residents and tourists alike an always-changing (and growing) inventory of vintage fashion, decorative arts, and design treasures. There's a real committed core of vendors and dealers there.
Why does it take a while for a flea market to get its bearings though? Because change costs time, money, and energy.
Locations change (Hell's Kitchen instead of Chelsea).
Customers change (Post-eBay young professional in Manhattan are a growing chunk of today's flea market customers).
Tastes change. (What's hot now is mid-century antiques--1950's and 1960's decorative arts and furniture; also, vintage clothing is hot.)