Sam's Club continues to offer the Serta Perfect Sleeper Luxury Hybrid Glenmoor Super Pillowtop Mattress in several sizes from $459 with free shipping, as listed below. (Non-members pay an additional 10% off, so it's better to get a 1-year membership for $45.) Deal ends January 28. The sizes:
  • Twin for $459 (low by $340)
  • Queen for $469 (pictured, low by $505)
  • Full for $569 $469 (low by $380)
Don't mind picking it up? With stock varying by ZIP code, Queen is also available for $369 with in-store pickup.