How much to fix and plaster this? Pictures included

[Hurraahhnaptime]

I've just had an alcove shelving unit taken out. Unfortunately it had been glued onto the plaster and this is the damage. Some of the plaster has blown. A small job just became much more expensive! How much do you think it should cost to fix and plaster this alcove? I haven't got a clue if I'm being charged a lot as I already paid to have the shelves out and now need to pay for it to be repaired by the same person. But if the bookshelves were literally bonded to the wall I guess they couldn't help the damage. Thanks

[Hurraahhnaptime]

Photos

[Allthebestnamesareused]

Probably about £150 if they are on a day rate

[JoJoSM2]

I'd expect a bit more than £150 as I'm in outer London but a day rate sort of thing to patch it up. You'll also need to consider reprinting the room afterwards so that the colours match.