Etekcity offers its Etekcity Elevated Twin Air Mattress with Electric Pump for $79.99. Coupon code "FIRWL3N7" drops it to $59.99. With free shipping, that's the lowest price we could find by $39. It features a built-in electric pump, supports up to 400 lbs., and measures 75" x 39" x 18" when inflated. Deal ends August 16.