That's the key thing, they're about $40 in the US, which should translate to about £30. But I bet they'll be more like £50.
I might just buy a blade grinder, I know they're not as good, but it'll probably still be a big improvment.
Blade grinders are a complete waste of money. You get some large chunks of bean and fine powder - useless for any method of making coffee unless you then have a series of mesh filters and seperate the grounds.
Buy the Starbucks Barista grinder.