Hot fuzz i was in the same boat as you honda paid for part and i have to pay for labour ive got marshalls york to do mine for £54 hr which is the warranty price they would normally charge Honda.
There normal price is £79 a hr said it would take 5.5hrs = £434 50p have sinced checked with other dealers and should take 2.5hrs~3hrs,so phoned marshalls up again and they will not charge me more than 3hrs at £54 hr = £162. You can also get any dealer to fit so you have that in your favour to haggle over price. so in my case i have saved £272 dont be scared to pick the phone up mate they also wont have that much work on this time of

yr