I want to purchase, via download, "Ripley's Game." From whom, Please?

I love watching ‘Ripley’s Game,’ with John Malkovich, and have decided to purchase it. I ordered two, online, from Half.com, which has never failed me before, and they failed me. So, I went to Amazon and tried to download/purchase it, and they didn’t have it. So, where can I purchase, via download, Ripley’s Game? I’m worried about paying money to one of these sites that hint that you can download something, and then have them say that I didn’t pay to download and keep a movie, didn’t pay for the deluxe premium plan, etc…
Can anyone here help me?

Thanks,
hh

I don’t have iTunes on my machine here at work, but from what I can tell from the Apple\itunes site, you can download the movie on iTunes.

J.