Can't download Halo 2 trailer from GFWL

Went here thinking maybe I can buy H2 Vista (of course it’s not available at all). http://marketplace.xbox.com/en-AU/Product/Halo-2-PC/66acd000-77fe-1000-9115-d8044d53080f

Figured I’d at least grab the trailer since that’s apparently as close as I’m getting to playing the game.

It says it’s free, so I clicked “Buy for PC” (haha, wut, I thought it’s free)…

“Sorry, this offer is not valid in your region.”

OK, if I can’t download it, why even show it to me and give me a “Buy for PC” button?

I have no clue how that stuff works, but you could probably just go on Ebay or Amazon and pick up a copy.