Amazon offers Prime members the Intex Queen Raised Downy Airbed Mattress, model no. 66717E, for $33.59 with free shipping. (Non-members can spend $35 to bag free shipping; otherwise, it adds $21.79.) That's tied with our expired mention from four days ago as the best deal we've seen. (It's a current low by $5.) It features a built-in electric pump, dual chambers, and waterproof flocked top.