Amazon offers the Razor Dune Buggy for $299 with free shipping. That's the lowest total price we could find by $42. It features a 350-watt electric motor, hand throttle, brake controls, and speeds of up to 10mph.
Walmart offers the Razor Crazy Cart in Red, model no. 25143499, Black, model no. 25143490, or Pink, model no. 25143461, for the in-cart price of $299 with free shipping. (Amazon charges the same price in Red and Black.) That's the lowest total price we could find by $51, although we saw it for $49 less on Black Friday. It features go-kart and crazy cart modes, speeds of up to 12 mph, and a drift bar.