That's not a bad idea Sunking except that the only thing I see that Herman Miller has on that other site is the Aeron chairs.
I have many of those components around our production facility and if the average everday user wanted to buy those I can guarantee that the cost of the material alone would be over $1000. Average shop time for me as a customer in our shop is $85 an hour and that would be about a three to four hour job. Roughly $255 - $340 in labor alone. That doesn't count the seat, wiring, etc...
Still I might do something similar here and when I do it will be a one of a kind deal. Boy the wife won't like it either.