This deal has ended.
The Bodipedic 8-inch Queen-size Memory Foam Mattress and Cover Set drops from $299.99 to $269.99 at Overstock.com. Better yet, activate this link to take another $5 off and cut it to $264.99. With $2.95 shipping, that's the best deal for this mattress by a wide margin (this same one is $353.44 at Amazon!). It is well reviewed with 4.7 out of 5 stars from over 250 buyers. There is no sales tax (except UT).