Opinions on a oil boiler service bill

[casius66]

Yes but I know for sure that in all the oil boilers I have ever gone
to repair I have never had to replace both a pump and a control box at
the same visit.
They can't bother be wrong.
Oil boilers are some of the most reliable pieces of kit on the market.

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It's rare but not impossible to get 2 faults and as per the oilhead post:

HRM Wallstar does not need a fire valve other than that fitted by manufacturer. This incorporates a non return valve. If this fails, then the pump hunts for fuel, eventually wearing it out. It also causes re-ignition, overloading the spark generator and blowing it, so it is quuite possible that all parts needed replacing. Possibly a little on the high side, as I'msure a bona fide oil technician would not pay anywhere near HRM's quoted price for parts.

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I've come across the same on a HRM wallstar, bit unfortunate for the customer but you can only address the problems as you find them and advise accordingly.
Did you agree 'mates rates' up front ? If so it does seem a bit expensive but he's done a fair bit of work in 2hrs and it'll hopefully see you through the next service.