OK, so I decided I should get a mk2...
Found a cheap one on eBay, problem is the seller is a new eBay user, has zero feedback, and it smells stolen (no dock)... No information on unit serial, drive size, etc, but I have mailed the seller asking for that information.

Presuming he tells me the serial, where can I find a registry of known stolen units?

eBay page here
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#00182, 10GB, Amber, Denmark, Peugeot 206, Rebuilding my stereo - great things to come