How much is involved In changing motor mounts and strut mounts on my 06 dts

I talked the my dealer recently about changing motor mounts.... he said the car has 4... but in the history hes worked at Cadillac only one goes bad which is that top bone mount under the hood... other than that the other 3 never wear out. ive also had the strut mints replaced.. cost me about 400.00 in reality i should have changed the whole strut. try looking for a ready strut by acdelco.. what ever you do stay away from monroe

you may want to get some more estimates from local,trusted,independent repair shops and not Meineke!