Electrical / Plumbing Verbal Quote

Saipan

Hoping for some advice...thanks in advance.

I have been verbally quoted £750 for the following electrical and plumbing work - awaiting a written breakdown but just looking for feedback as to whether it seems fair?

The work is made up of:

Diagnose and repair problem with shower pump, which the plumber says sounds as if it could be because air is trapped and suspects might be due to valve issues in the cold water tank (I accept the quote might change depending upon what he finds)

Fit 2 wall lights in bathroom with new light switch fitted on landing (I will supply the lights)

Diagnose and repair problem with 2 of 6 spotlights in bathroom with new light switch fitted on landing and old pull cord and fitment removed and area made good

Diagnose and repair problem with 2 of 12 spotlights in bedroom (these and the ones in the bathroom haven't worked since I had the ceilings replastered and the plasterer pulled them away from the ceiling while he worked)

Supply and fit 4 new socket covers, one dimmable

Supply and fit 1 heat alarm and 1 smoke alarm

Supply and fit 1 replacement light under kitchen cabinet

Fit new mixer tap for kitchen sink (I will supply the tap)

I live in North West England.

Many thanks for any help