I have two King 14 inch comforpedic mattress ( 500 each. If you want two I can give you for 1000) new and unopened from wayfair but My rooms unfortunately were smaller so coundnt accommodate king beds and now I have to sell this.
https://www.wayfair.com/bed-bath/pdp/comforpedic-loft-from-beautyrest-firm-gel-memory-foam-mattress-cplb1034.html?piid=43367364%2C111709933 ComforPedic Loft from Beautyrest Firm Gel Memory Foam Mattress