Latex Foam Mattress Topper?

I want to buy a latex mattress or mattress topper. I want high quality all natural latex and the pad must be at least 4". I have a budget of $400 please post any website that fits this criteria. The cheapest one gets best answer however it must meet all the criteria
Twin Size mattress
IT MUST BE A LATEX FOAM TOPPER NOT ANY OTHER KIND OF FOAM, LATEX

http://lovemymattress.com they can help, they are aligned with a manufacturer. Tell them Mj sent you and they should be able to fit that into your budget.

They do custom mattresses and will sell toppers also.