Our books are printed and shipped from the United Kingdom, so getting them in France should actually be easier than getting them the U.S. In theory. It all boils down to the distributors and retailers. If you'd like it to show up in stores near you and it's not already there, then we ask that you poke the store owner about it. Ideally, he or she would in turn poke their distributor, who would poke Mongoose, and the channel would open.
Amazon is another story. The $100.00 price, if I'm understanding the situation correctly, is for the original AEG printing, which is long out of print and becoming something of a collectible. Those prices aren't actually set by us but by individual consumers who sell through Amazon. Our products - again, as I understand it - haven't yet migrated to Amazon for some reason that eludes both us and Mongoose. We're working on it and hope to have that resolved soon.
In the meantime, again, we ask that you pester your retailer, as it's the best way to get our books flowing regularly into stores. Don't believe them if they say the book isn't available - it is. If they say that, they're refusing to order it rather than not able to. Sometimes you can solve that with persistence; sometimes you just have to prove them wrong (perhaps by ordering it directly from Mongoose and running the game in their store).
Hope that helps!