On 15 Oct 2004, Christian McArdle wrote

It's just gone up from £40 to £42 (it was done last week). I
have it done twice a year.

Do you know how much extra it is to adjust the action? I imagine
it is due for that. The keys are all at different heights, for a
start!

No idea; sorry. (I've never needed to have that done, but I can
imagine it takes a tad longer than the hour or so it takes to do the
semi-annual tuning!)

--
Cheers,
Harvey