Costco offers its members the ProForm Premier 900 Treadmill for $799.99 with free shipping. (Non-members pay a $40 surcharge.) That's the lowest price we could find by $199. It tracks speed, time, distance, calories burned, heart rate, and incline stats, and features a touchscreen display, fan, QuickSpeed control, Quick Incline control, ProShox cushioning, and sound system. Deal ends January 28.