Yep a friend ordered a NFB-3.1 which was not on stock. It took more than 1 month (almost 2 IIRC) to get it delivered :/
They don't seem to reflect all the taxes on Hifiman products (it should be 700€)?
For the record, I always ordered my Hifimans on Head-direct and never had to pay customs (HE-4, HE-400, HE-500) in France.
Guess you got lucky with French customs then! Out of curiosity, how much did it amount to for the HE-500 if you include shipping (in euros)?