The ProForm Performance 300 Treadmill drops from $999.99 to $389.99 at SportsAuthority.com. Shipping starts at around $85, but this is still the best price we could find for this treadmill by $174. It features a dual-grip heart rate monitor, 16 workout apps, a shock absorption system and more. A ProForm 7.0 RE Elliptical also drops to $389.99, matching Amazon for the best price we could find for it; however, Amazon only has 5 left in stock. Sales tax is charged in most states.