I bought some old and new stuff from ebay, its basically all stuff from Rahsol/Gedore (Herder)
Old Packaging(probably sat in storages for several decades)
New Torque Wrench from Carolus (Made in Germany by Herder/Rahsol like all other Gedore Torque Wrenches afaik) and Rahsol Wrenches
Edit...
Probably best to contact that ebay vendor, the arndt website mentions in their Terms of Service that they only do international sells above 100€. You hardly gonna pay that for two sets of bits.
Ribe Bits...
Ok, the same vendor offers bits from arndt aswell, they arent out of business, just rather unknown even in germany.
http://www.arndt-tool.de/
Might be lucky contacting them directly.
The Bitholder can be bought here:
http://www.ebay.de/itm/1-Bit-Magnethalter-1-4-x-65mm-lang-Bithalter-Schnellwechselhalter-/271136822199?hash=item3f210393b7:m:mFwq6_7fUXcBVw3VndRpyQg
From the looks of it you can order it to the US from them. The same Vendor has alot of Arndt stuff.
Yay First...