Thanks for the reply Janet, OH has just looked on Amazon and found that out.
I thought they were something new as someone at work has just bought one and I had not heard of them (mind you rarely bother going shopping ;))
So my plan to be able to have chips more often has failed :'(
Anyway there are other ways of making healthy chips so will try that (and save over £100 by not buying one!)
Now do I tell the person at work :-\