Justin Bieber's discarded shoe could land a lucky fan a few thousand bucks ... and there's still another one out there.
Biebs took the Yeezys off his feet and hurled 'em into the crowd during a Sunday night concert in Germany. The lucky dog who nabbed the right sneaker already has it up on eBay ... for a starting bid of 5,000 euros (about $5,670 in U.S. dollars).
Bieber's left shoe is also online, but not for profit -- @theleftyeezy has more than 5,000 followers on Instagram. And if you're curious about JB's shoe size, here it is ... allegedly.