Wayfair Sleep 8" Medium Memory Foam Mattress The Mattress: Wayfair Sleep Memory Foam Mattress ($185, originally $400) Comfort Level: Medium The Thickness: 8 inches Why People Love It: If you're not too picky about mattresses and just want something affordable, you can't go wrong here. Not only it is on major sale right now, but it's also been reviews by over 15,000 customers. Image Source: wayfair.com Wayfair Sleep Memory Foam Mattress $185 from wayfair.com Buy Now