Walmart offers the ProForm XT70 Shock Treadmill, model no. PFTL05099, for $394. Shipping adds $69.97 or choose free Site-to-Store. Even with shipping, that's the lowest total price we could find by $36, although we saw it for $64 less in January (since expired). Sales tax is added where applicable. Features include a top speed of 8 mph, 16 personal trainer workouts, an integrated dock for an iPod or MP3 player, and more.