www.amazon.fr is probably your best bet - they ship internationally. The DVD has some interesting supplements, some of which are in English, some (even from US critics) in French only.
It's a nice package.
The most interesting supplement is a Welles audio interview by Peter Bogdanovich (52 min). Though it is played over segments of the movie, it's not screen specific.
Other supplements are:
-Two video interviews (with Jean Douchet and Bill Krohn) that last about 20 min each, but are in French.
-The trailer, which is in English.
-Biographies and a nice booklet, in French.
Both Amazon.fr and Cinestore ship to the U.S., but I believe Cinestore's shipping costs are higher (about €15 to the states).
Anyway, try to get all-time classic Rules Of The Game (La Règle du Jeu) with it. It's from the same company, and is fully enjoyable for English viewers (even down to the menus).