Right now at Walmart, get the ProForm Pro 4500 Treadmill for only $1,599 after a price drop from $2,999. This deal price saves you 47% off the retail price for this treadmill. Shipping may be extra or you can choose free in-store pickup. Sales tax is charged in most states. This is the lowest price online by about $100, although Dick’s Sporting Goods has it about $1 more than this deal price.