NZ Benz- There are no "part numbers" on alot of Stahlwille tools. I looked in the latest Catalogue, and the don't appear to carry the tool any more. There is a Hazet version, though
Part# 2735 http://www.hazet.de/eng/katalog/kap7...ge=10&view=Fit
W140 FTW- I have a "wholesale" account, so it was around $20 for me. I think the "standard" fare is around $25. Call Caliber Motors in Cali, or Duval Motors in FLA. They should be cheaper. You can also check Ebay. Just make sure you have the correct part number.
Just out of curiosity, what did that new hoodie run you at the dealer?
I'm thinking about buying one as a backup.
If your really worried about it being stolen they do sell removable ones on Ebay now and then the base stays in the car like a flat one and the star slides in and locks.