Look people, this is just silly now. SoR3 has been regularly pulling in 50+ recently, but this is just getting daft. Even loose carts have been going for 30+.
While it's a great game, and in high demand, the simple fact is that it's not that rare. There were 25 PAL copies on eBay between September and December last year when I was logging auctions for the PAL rarity list, and that puts it on a par with stuff like Outrun, Rolo to the Rescue and Kick Off 3.
Still glad I got mine for 2.50