Sleep with Memory Foam 2 Night via eBay offers this 14" Memory Foam Mattress
in king or California king for $459
with free shipping
. That's $41 under the lowest total price we could find for any 14" memory foam mattress in either size elsewhere. It features an 8" high density supportive base foam, 3" core foam support structure, 3" cool memory foam top layer for air circulation, and more. Deal ends February 28 at 1:40 am ET.