Sears offers the Sealy Posturepedic Anaheim Ti Plush Mattress in King or California King for $367. Coupon code "SEARS5OFF50" cuts it to $362. With $69.99 for shipping, that's $378 off and tied with last week's mention as the lowest total price we could find. It features gel memory foam and box springs.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.