Serta 3″ Memory Foam Topper with Contour Pillows, Any Size for $105.89. Note that you have to go through this link and then add it to the cart to see the discounted price. Shipping is $1, so the total comes to $116.89. Here is a screenshot for your reference. This price is available for all sizes, including Full, Queen, King, and Cal King. Most places have it for about $149.