There is no denying AmigaKit are truly excellent but I don't like this whole "well they're an Amiga dealer so we must support them" business. It is no excuse for selling a game that's more than 11 years old for £30, or for that matter anything else that has a steep price tag (haven't checked lately though). If I feel something is a rip-off (like with CP) then I won't buy it and if it threatens to put them out of business, tough.
But presumably the reason prices like this are high is that people just say "well I'm supporting an Amiga dealer" and buy them anyway. It just seems to be total madness to me.