Are the prices I am getting for work on my car high??

[Dgrange]

Hi,

I have bought a 2007 Boxster and took it to my local garage for some work it needs - what do you think of the prices below...

- replace both seat belt buckles as airbag light is on $597

- 60,000 service $ 1302

- replace crank case breather $829

The place is a very well respected and long standing Porsche specialist, with a good reputation I am just not sure if I can get the work done anywhere for much cheaper......any advice would be much appreciated.

Thanks.