Get Up to 60% Off Mattresses during a closeout sale at Sears.com. Shipping is free on orders over $599. For example, this Serta Perfect Sleeper Taryn Queen Mattress Set drops from $1499.99 to $599.99 delivered, which matches the lowest price we've seen. Plus, delivery is free, saving you another $70. It includes both the queen mattress and box spring. Sales tax is charged in most states.