I just took my car into honda to get the brakes done and they told me I need to replace the Side and Front Mount. They said that these two mounts are completely broken. They quoted me $170 for the side mount and $255.10 for the front mount (near the radiator). I don't know if I should have this done from Honda or get a second opinion before proceeding. Any advice would be great. Thanks

Oh, and another thing. My Honda has 90K miles on it. I don't know if it is normal for mounts to break at a certain milage. The mechanic also told me that my car has 5 mounts, of which two are broken (as indicated above).