King ADJUSTABLE Bed w/ Memory Foam Mattresses – $1799 by Sandi Varn | Posted on November 19, 2014March 19, 2017 This KING size adjustable bed is ideal if you work, use your laptop or ipad, read or watch tv in bed. It comes with two extra-long twin memory foam mattresses and adjustable bed systems. It comes with a full factory warranty. ONLY $1799. I can help arrange delivery if necessary.