I believe this is what was being referred to:

http://www.marriott.com/rewards/term...eemforanything

I remember when this was introduced early on, I had them price something. I didn't hear anything for a couple of weeks, and then when I asked about it again, the quote I got was so high, I didn't even consider it. I figured this offering had died a slow death. And it is pretty hard to find on the website.