Thanks to the gift card, that's at least $1,101 off list and the lowest price we've seen. Buy Now at JCPenney Tips Click here to receive a JCPenney gift card worth $50 with purchase of mattress & flat box spring or $100 with purchase of mattress & adjustable base when you buy one of the following mattresses: Serta Perfect Sleeper Elmcrest, Beautyrest BRS900, or Sealy Humbolt. Use coupon code "GOSHOP41" to get the discount. Features Twin for $599 ($1,101 off) Twin XL for $629 ($,1,271 off) Full for $648.99 ($1,351 off) Queen for $699 ($1,401 off) Split Queen for $789 ($1,541 off) King or Cal King for $999 ($2,001 off)