Another member ( Wildboy ) tells me that an eBay seller named Grobis Tattoo Express sold them for about 100€ on ebay.de some years ago. I don't know if they were the manufacture or just the distributor.

Please do ask around. It is a cool system.

I saw another one on eBay and the seller claimed it to be a rare machine and not easy to come by. Granted this is an eBay sellers claim and my German is only so good so my translation may be a bit shakey.