Not if you want to get a german version; my brother is searching for a german players handbook that isn't totally overpriced for about 9 months now
Yes : That's exactly the problem.
Ah well, then that's a different matter… I'd be surprised if all the original materials were ever offered in German!
As far as I know they were even all translated.
On conventions I often see lots of books ... But right now I fear that they are mostly replaced with books of the 4th edition ...
But in the end I really can't say for sure - since I'm not that deep into (A)D&D at all.