That's a tricky one as you don't know what, where, when etc.
Take the ballvalve, a couple were £100 which is a little expensive but not that bad, the £360 is very expensive but may have been part of an emergency call out on a Bank Holiday.
Just to say Bathroom and x price is nowhere near enough info, even a straight swap can be a pain if the waste doesn't line up etc. Fitting a new bathroom could include repairing holes, strengthening floorboards, tiling, disposal of old etc etc etc
Also any of the supply and fit could be various prices for the parts, you can pay £100 to thousands for a bath alone.
It does re-inforce that you need to get good quotes before you call someone out, also to get a decent Plumber sorted out before you need them!
