Sears offers the Serta Sertapedic Chiswick Firm Queen Mattress, bundled with the Serta Sertapedic Queen Box Spring for $169. (Add the "Standard" or "Low Profile" box spring and the price will discount in cart.) Plus, coupon code "SEARS5OFF50" cuts that to $164. With $69.99 for shipping, that's a savings of $586 and the best price we could find. The mattress contains support foam designed for extra cushioning.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.