I was quoted a 10-12 month delivery at a cost of 12k Euros ex works. That was for a 16 ga. in the case-colored version, there may be a premium for a .410 and for silver action version (which has a bit more shaping to it).
If you are interested in this, I would definitely suggest that you track down NoDak Scotty, as he went all the way through the process with Jens and can provide a lot more detail.
You can find some more information on this website - though the pricing information is a bit dated I believe
Heirloom