Sunvalley Brands via Amazon offers the Sable Twin Size 8" Camping Air Mattress for $35.99. Coupon code "DNTQNANB" cuts it to $29.99. With free shipping, that's $20 off list and the lowest price we could find. It measures 80" x 39" x 8" when inflated and comes with two repair kits and a storage bag. Deal ends April 30.