This Kid Trax CAT Bulldozer Battery-Powered Ride-On Toy drops from $279 to $149 at Walmart.com. Plus, shipping is free. This is the lowest price we could find by $43. It features a 12-volt rechargeable battery with charger, has a top speed of 2.5 mph in reverse or forward, and comes with a hard hat and two plastic boulders. Sales tax is charged in most states.