You should consider sending files of these to amazon so people could order them for themselves.
I have had the good fortune of having a French girlfriend for many years, besides having learned the French language, which I had at school.Some of if not the best reference books are only published in French.
I've never understood why English aditions have never been released.
With over 400 million people using English natively and another 1.5 billion who use it as a second language that's a lot of potential sales.