Sam's Club offers its members the Beautyrest Silver Open Seas Luxury Firm Queen Mattress Set for $649 with free shipping. That's $100 off and the lowest price we could find. It includes your choice of a 9" or 5.5" box spring. Deal ends August 19.

Note: Non-members must pay the $749 regular price plus a $74.90 surcharge, so it's better to get a 1-year membership for $45.