On a hot Friday last week the Senen sidewalk was bustling. A group of youngsters were jostling each other at a busy secondhand clothes counter. They did not notice the heat at all. Sweating profusely, they were intent on finding a bargain. "Aha, I got it!" shouted one young man as he triumphantly displayed a baseball jersey branded FUBU, priced at no more than a few thousand rupiah.

"If not for these jumble sales, I could onl