Ijust sent you a pm about it Let's see if that will lead us anywhere.
I also lost an auction for a Leap Frog cart on ebay recently (the first I saw since I actively started looking for those), it sold for way more than what I was expecting. Actually the seller bought it on a Videomaster auction that ended just a couple days before and immediately put it for sale for a profit. I would have probably won the first auction, but the seller didn't want to ship outside UK.
5 years have passed since then, but won't hurt to ask him again I guess. He does say he isn't against dumping the games.
Yeah, Leap Frog looks like it will be difficult to find, so hopefully that works out. Similarly, 3D Attack has proven elusive. Let me know how it does.
In the future, if you need help with UK games, you could contact incog on here.