I've never flown an AR Drone, but there are a lot of people who love them. There is also a user on the forum that sells a kit that allows you to fly it with a real transmitter, rather than an iPhone. This increases the range I believe as well.
If you're just looking to get started, just about every build you'll find on the Internet will support a GoPro. You don't even really need a mount or gimbal to start. Are you also looking to fly FPV (First Person View)? This will allow you to fly with video goggles and see things from the copter's point of view. This makes filming and taking pictures a lot easier since you know what the view looks like from the camera.
There are a lot of different builds out there and people take different approaches when they get started. I like the idea of building something less expensive to get comfortable, then upgrading once you gain experience. Broken parts from crash landings can get expensive quick! The other good thing about buying something less expensive is that you can buy extra parts initially. That way you don't have to wait weeks for parts when you crash.
I'm not sure about hobby shops based out of France, but HobbyKing has a European warehouse. I think it's in the Netherlands. Shipping from there might not take that long to arrive in France and may not be that expensive. If you don't mind waiting and paying a bit more for shipping, buying from shops in China is usually the easiest since most of the companies who make parts for these are in China/ Hong Kong and they carry most of their stock in the local warehouse.
OddCopter has a pretty good cheap build with parts list and prices here:
http://oddcopter.com/2012/12/12/easy-diy-quadcopter-build-part-1-the-parts-list/
There are also a lot of other options if you search google for cheap quadcopter builds!