Depending on the year, the shop was either run by Wenzel Wilfer or Emanuelle Wilfer. 10-11k is a big price to pay now for a new Wilfer when so many old Wilfer/Juzek Basses are in circulation and available. The question is, what could YOU sell it for tomorrow if you decide to get something else.
Today, it is not hard to find a Bass well made in China that easily competes with the German Shop Basses. Not long ago I heard that the Wilfer Basses were made by a subbed out Shop in Mittenwald that makes various brands on contract. Still, Wilfers, Juzeks and many other similar German Basses have always been considered as just 'Shop Basses'.
For the value and tone delivered, I would shop for price as well. The new
Amati Model Basses I just had made sound as good or better than any newish Wilfer I've played or heard.
Now, if I posted pics of them here for ID what origin would you have guessed?