I was going to start a thread on this myself. eBay UK is flooded with these games. Amazingly, the culprit sellers hardly have any negative feedback.
The items all state something like "the original disc will be provided in a standard DVD case", which basically means you get a CD-R with a printed label (scanned from the original I imagine).
Given the lack of negative feedback, either (a) the discs look convincing, or (b) people don't care and are just glad to have the games.