This Spa Sensations 12" Theratouch Memory Foam Queen Mattress drops from $399 to $349 at Walmart.com. Shipping is free. We only see rollback pricing on this mattress a few times each year, and it's over $400 everywhere else. It also drops to $249 for Twin and $399 for King & Cal King. Plus, this mattress was given a perfect 5 out of 5 star rating by over 2,800 Walmart reviewers! Sales tax is charged in most states.