And yes, I own a copy. I got it about five years ago for far less than these resellers are demanding. I don't know how much as Amazon combined the price with something else I purchased, but I believe it was around £7.

This is why you should NEVER sell your video games because you will regret it.

This is what happens when the internet rediscovers an obscure game... they overvalue it for whatever reason. Piglet's Big Game is not valued at $300 or higher, at most I value a used copy to be $20 or less.

And since eBay now allows people to sell for free, this is what it leads to.