Where do I get a single 18 way seat?

A little history: There is no boss chair or office chair that makes me almost satisfied. Somehow everything is not really adjustable, in principle everything junk where you turn on some wheels and only change the pitch of the knarzens. I have already passed through many models from 100 to 800 euros. If I sit in the Phaeton I do not think at all about such problems. Now someone has shown me today “racing seats” as an office chair. Such a Recaro bowl on office chair rolls Since the idea came to me from an original seat to make an office chair. They just had to put a 12V cable and install armrests to me somehow. To do this a stable substructure Be put on whether this is so easy, but I wanted to ask you something: Where do you get such a seat, and what do you pay for it? I don’t even know what you pay for it at VW.