Sealy Posturepedic 12" Memory Foam Mattresses are now available for just $399.99 for the queen size and $449.99 for the king size. Previously, the same king size model was selling for $549.97 at Costco but is now out of stock. These mattresses have earned over 150 five-star reviews on Costco, praised for their comfort and support. This is an excellent opportunity to get a highly rated memory foam mattress at a lower price while stock lasts!