Inside a run-down mall off of Elizabeth Street in Chinatown, down an escalator to the basement and past a raft of empty storefronts, is a minuscule store, the size of a walk-in closet, that’s quietly at the center of a peculiar global fashion empire. It has no sign and it’s not on the mall directory. It’s impossible to find on Google. The enterprise, which its owner refers to as Unique Hype Collection, is in the business of buying clothing from the skate-inspired men’s fashion brand Supreme at retail prices, waiting until the items have sold out at Supreme’s physical stores and online shop, and then putting those items up for sale in the mall and on eBay at significant markups.