Sam's Club offers its members the Serta Ultra Luxury Hybrid Shoreway Plush Mattress Queen Set with 5.75" or 9" boxspring for $599 with free white glove delivery. (Delivery includes basic set-up and haul-away. Non-members pay an additional $59.90, so it's better to buy a 1-Year Membership for $45.) That's $100 under last month's mention, $700 off and the best deal we could find. This smooth-top mattress features a 14.75" profile and hybrid gel memory foam / individually-wrapped coil design. It's compatible with Serta adjustable foundations (sold separately).

It's also available in King or California King for $899 with free shipping. (As above, non-members should purchase a 1-Year Membership for $45 to avoid the $89.90 surcharge.) That's also a $100 drop, $700 off, and the lowest price we could find. Both deals end December 2.