I bought this thing at Play N Trade last night. It's a copy of Jurassic Park: RE, but it's a Mega Drive cart with a Genesis label, very odd. I have the game and box. The game is pristine from what I can see, and the box is in good condition. The copy I have didn't come with a manual, but I don't even know if the manual was any different from the standard release. The box has the text "For sale and use in Asia" near the bottom of the back of the case.
The people over at Sega-16 said the thing is worth a bit, but I don't know how much it's worth because it's not complete.
As an aside, the game DOES work. I had to fit the cart in my Game Genie to get it to work on my Genesis, but it works, and it plays just fine.