Cooling Gel Memory Foam Hybrid Mattress, 12 Inch King Size Mattress in A Box with Pocket Springs for Back Pain & Pressure Relief, Medium Firm Feeling with CertiPUR-US Certified Foam King 12 Inch is up for auction in Home & Kitchen. The current bid is $76.00, 73% below the $285.00 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.