His prices are always high from my understanding.i think you may have a heart attack if you went to Forgotten Worlds in Scotland. I went 2 weeks ago. AES jap in box, 750.
and Jap box art has always been the best to display, regardless of console. I almost bought a jap super famicom today, mainly just to buy the jap games i had myself back in 94.
Easily go on eBay and get cheaper. See link Neo on eBay
Chill out games sold one via eBay a week ago, boxed and in nice condition for £550