Movielink sells movies now too...
Movielink, a web site/company specializing in legal downloadable movies recently announced that they would be allowing purchases of movies, rather than just a DRM-time limited download. Prices vary, but I was interested in comparing to a movie I purcahsed a week or two ago at Circuity City, King Kong (2005). We bought it the week it was released for $13.99 in the store.
Here's Movielink's price: $26.99!

Why would I want to download the movie for $27 US if I can buy a physical copy for less? The DVD I can play on any DVD player (loan to friends, etc.), whereas the download will play on up to 3 PCs (and I'm sure they must be running Microsoft Windows).
I also don't see where the size of the file is listed for the purchased downloads. I wouldn't want to store too many of them given that a full movie averages about 1.5 GB.
Has anyone bought a downloadable to-own movie? If so, why? How was the quality? We we tried the rental service, we weren't happy with the quality when we watched it on our movie screen via a Media Center extender. It was somewhere between VHS and DVD quality.