I'm selling a copy of Zelda's Adventure for the Philips CDi, still in plastic.
Link: http://www.ebay.com/itm/321061436280...84.m1558.l2649
The plastic has got some scuffing and smaller rifts(so not completely "sealed"), with the most prominent one easy to spot in the lower right corner in the top picture, and there's a small(~2 cm) crack in the jewel case near the bar code area, which can be a bit hard to see in the picture.
I've set the starting bid price roughly £30 less than the cheapest opened copy of the game on eBay.