US-Mattress offers the Sealy Comfort Series Memory Foam Twin Mattress
with free shipping
. That's tied with our mention from last week as $41 under the lowest total price we could find for a comparable Sealy gel-infused memory foam mattress. It features a top layer of gel-infused memory foam and back support.
Note: It's also available in Twin XL for $439, Full for $459, Queen for $559, and both King and California King for $759, all with free shipping.