Motorola is all set to unveil its Moto 360 watch at a press event in Chicago on September 4th, but it looks like Best Buy has let the cat out of the bag. A product page for the Android Wear smartwatch has mistakenly gone live on Best Buy’s mobile site, and it lists the device with a $249.99 price tag. This is not the first time we’ve heard that the Moto 360 will cost $249.99. The fine print of the official rules for a Motorola contest this past May placed the smartwatch’s approximate retail value at the same price. Droid Life first reported on the leak earlier this afternoon.