The price seems higher than I recall it being - somewhere in the region of £90 but can't find that now.
I would question the value of such training. Most jobs don't need that advanced a level of Office yet do ask for some level of competance. For proving that something like the ECDL would no doubt suffice and is widely recognised. I know of some employers who will only consider applicants who have, or would be willing to do, ECDL.
I guess it comes down to the kind of job you are looking to get?