I need a queen mattress this weekend. Do any stores around here carry queen or king mattresses in a box in store?

Really looking only for far NW OKC/Edmond. I really, really don't want to go to NW Expressway, historic, or South OKC for this.

Do any carry any reasonably priced mattresses in a box in stock? I saw a mattress at Sam's for $600, but that's way over my budget for a guest bedroom. Stores with cheap mattresses and cheap or free delivery would work, but mattress in a box would be ideal. I'm really hoping for < $200. I don't need the foundation/box spring, just the mattress itself... preferably 7 inches thick or more.