I think you need to check with your insurers as they can differ, even on small quotes. I recently had my mothers dog knock over my pc and smashed the screen.
In this case the insurance company required the pc company to end over a report and that it was uneconomic to repair. Then they paid a cheque out to my mother as it was her insurance......and she cut a cheque to the pc company. Simple and easy and the dog actually did me a favour as I have a brand new computer.
On this sort of claim, they prefer to replace new as yes, they could have paid the repairs, but then there is a risk of a second claim being made a few weeks down the line if something else is found to be wrong as a result of the accident.......and with a new piece of kit, all issues are resolved and normal new guarantees come into play.