Get the Serta Perfect Sleeper Cache Hotel Pillowtop Mattress Set (Queen Size) for only $799 after a price drop from $969 at QVC. You save 18% off the retail price for this mattress set. Plus, this item ships free. We could not find a better price for this Serta mattress set online. The Serta Perfect Sleeper Cache Hotel Pillowtop Queen Mattress Set includes a Perfect Sleeper Hotel Signature Pillowtop mattress and box spring. Sales tax is charged in most states. Deal expires August 12, 2018. Featured image does not show the box spring; see site for details.