https://home.woot.com/offers/sunbeam-king-dual-control-heated-mattress-pad Sunbeam Electric Dual-Control Heated Mattress Pad (King, 80" x 76") for $38.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.