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Pay just $549.99, normally $699.99 on a Casper Select 12-Inch Memory Foam Medium-Firm Queen Mattress at Costco. The Casper Select 12-Inch Memory Foam Medium-Firm King Mattress is also on sale for only $699.99, regularly $899.99. Please note that these are in-warehouse-only deals. The online price is $50 more than the in-warehouse price.

Amazon sells the same queen-size mattress for $1,098.95. You’ll save $548.96 when purchased at Costco. I also found the king-size mattress on Amazon priced at $1,597.50. You’ll save $897.51 when you buy it at Costco.

A Costco membership is required for these deals. Not a Costco member yet? Sign up for a membership and get a $10 or $20 Costco Shop Card. Then read our Costco membership guide. Check out this month’s Costco Coupon Book deals and save on food, electronics, laundry detergent, and more.

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