difame (luxury hotel) 18 inch hybrid king size mattress in a box, medium firm | (2026 upgraded) reinforced edge support, 7-zone support & pressure relief, cooling sleep, certipur-us is up for auction in Home & Kitchen. The current bid is $100.00, 87% below the $799.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.