Amazon offers the Jetson Rover V8 Self Balancing Scooter, model no. JROV8-BK, for $389.99 with free shipping. That's tied with last week's mention and the lowest price we could find by $210. This UL-certified hoverboard features dual 400-watt motors, a maximum speed of 10 miles per hour, LED safety lights, all-terrain tires, built-in speakers, and three speed modes.