Just phoned and got another quote, spoke to a guy in the workshop who brought up my car and the last job done on it - apparently the labour had been "imported incorrectly on the quote" at £1500
New quote was £474, which seems low, I asked him if that was specifically for my car and he said yes.
I'm still suspicious but now for the completely opposite reason! I bet when I do actually take it in that I don't get quoted that either.
I think that might be correct as thinking back I think they quoted me for discs and pads all round.