Macys offers Serta Serene Sky 11" Plush Mattress- Full for $379 (reg. $919) plus $50 shipping.

Product Description:
Serta's Serene Sky™ 11" Plush Mattress offers an unbeatable value from a trusted name. Exceptionally soft, this mattress is ideal for side sleepers who enjoy a cushioned feel. Cool Twist® Gel Foam works to create a cool sleep surface which is essential for a more restorative sleep while the 805 Individually Wrapped Coil System provides contouring cradling support. Finally, BestEdge® Foam Encasement ensures that you will not have a sinking feeling at the edge of the mattress.