Going back to the original poster, it’s impossible to know if it’s good or bad value as there is nothing to directly compare to.
When working out ‘value for money’ of anything one looks for a constant to enable comparisons to be made. The only constant here is the number of hours work. Once you understand that, assessment can be made far easier. Do I want to use a main dealer at £120/hour, is there an independent or local garage I can use at £75/hour, am I happy with the premium for OEM parts, or OEM grade pattern parts will do etc etc
It begs a question:
Has any Funster suffered a MH breakdown that resulted from fitting pattern parts including timing belt?