This seems very expensive cost of ball valve being changed is normally £60 plus materials £30 Topps
Cost of removing toilet and cleaning toilet would depend on how long taken to clear blockage but would have thought up to full day £200
I have cleared lots of toilets over the last 20 years and can only think of couple of times had to remove toilet to clear but you may have been one of these unlucky cases.
If both jobs had to be done out of hours then you would have a extra cost added. If the house was empty then no reason it could not have been done during normal hours