Buying English edition of iWork in France
iWork has multi language support. If you buy iWork in a French packaging, you can still use a different language on your Mac.
The language used in any iWork program will be the same as in your System Preferences set in OS X.
Advantages of the Mac App Store version

There is no disadvantage (besides no install DVD) when buying the iWork suite from the Mac App Store. You can download it again and again, because the purchase is linked to your ID.

You can also install it on up to ten computers if they are linked to your Apple ID. The iWork with packaging may only be installed on one computer (single licence) or up to five (family licence).

You don't have to buy the whole iWork suite at once in the Mac App Store. E.g. It's up to you to only buy keynote, if that's all you need.


Supported Languages
English, Chinese, Danish, Dutch, Finnish, French, German, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish