A couple of folks have already hinted at the distorted pricing. In order to have a fully working useable computer based on an A9 the actual cost is consderably hugher than £499. The Iyonix price includes keyboards, screens, CD drives etc.
I'll say it again my ARM powered PDA is almost the same as an A9 as far as desktop use is concerned, but costs £170. I have a wireless foldable keyboard (£50) which allows me to use my PDA in "desktop mode".