This deal has ended.
Overstock drops the Slumber Solutions Highloft Supreme 4" Mattress Foam Topper from $74.99 to $70.19. With $2.95 shipping, that is the lowest total price we've seen since January and and one of the least expensive 4" toppers we've seen to date. It's available in sizes from Twin to California King for this same price and it is well reviewed with 4.5 out of 5 stars from over 800 buyers. There is no sales tax (except UT).