Where in So Cal are you located? I was quoted $150 to install the D1 and the SWI-PS in Long Beach and then quoted $150+$60 for the PAC in San Gabriel. So i guess $150 is about average.
Is the disc scratched? Mine was getting that message then I bought an authentic West V.1.0 on eBay and put it in and it worked. For some reason I had to slide the disc in and then press the reset button.