That $500 Adidas sneaker we wrote about yesterday is now on resale sites for $4,000

The ultralight Adidas shoes that Sabastian Sawe wore at the London Marathon on Sunday are displayed here. Richard Baker / In Pictures via Getty Images Adidas' Adizero Adios Pro Evo 3 sneakers sold out in the US almost immediately after being released. The sneakers are now appearing on resale sites for as much as $4,000. Three runners who smashed records at the London Marathon were all wearing the Adidas sneaker. Adidas' $500 marathon "supershoes" are being resold online for thousands of do...