novilla 12 inch king size gel memory foam mattress for ergonomic comfort | 12 inch king mattress for responsive support, with green tea-infused foam, breathable side panel, mattresses in a box grey king 12 inch is up for auction in Home & Kitchen. The current bid is $1.50, 99% below the $254.98 MSRP, in New/Like New condition. Bid on this item at our Cincinnati - School Road location before the auction closes.