Night Therapy 9” NuRest® Better Than Latex™ Pressure Relief Mattress - Queen - Sam's Club for $339.42 + free shipping
After tax and shipping (when I called they said the only club that had them in stock was in Arkansas) it came out to $339.42...that's why I put that as the final price and put free shipping. If you so happen to live near the 1 store that has it in stock you can shave off about $16 (for shipping something this big that's a pretty good deal). Comes with a 10 year warranty. It's sold out on the Night Therapy Website and more expensive everywhere else. This mattress is considered "firm".