Kohl's offers the Ganwick Serta Perfect Sleeper Plush Innerspring Mattress & Box Spring Set in Queen or Queen Low for $799.99. Apply coupon codes "SNOWDAYZ" and "SERTA100" to cut the price to $594.99. Plus, you'll bag $110 in Kohl's Cash. (The Kohl's Cash can be spent in-store or online from February 8 to February 21.) With free shipping, and assuming you'll use the Kohl's Cash, that's $1,175 off list and the lowest total price we could find. It includes a 14" innerspring mattress with 1" PillowSoft foam, 1" Cool Twist gel memory foam, and 2-3/4" Comfort XD foam. Deal ends February 6.