Groupon discounts the Nature's Sleep Cool IQ 10" Memory Foam Mattress in six sizes, with prices starting at $269.99, as listed below. Plus, all items receive free shipping. That's tied with our mention from a week ago. It features a medium-comfort feel, 3" high-density Cool IQ memory foam layer, 7" high-density premium support layer, removable cover, and 20-year warranty. The sizes:
  • Twin for $269.99 ($1,030 off)
  • Twin XL for $299.99 ($1,100 off)
  • Full for $379.99 ($1,120 off)
  • Queen for $399.99 ($1,300 off)
  • King for $529.99 ($1,670 off)
  • California King for $529.99 ($1,770 off)
Note that you can also add a foundation starting at $150 more.