HOW MUCH for NEW GEARS INSTALLED?

I dropped off an 8-1/4" rear end at a local mechanic's home shop and he installed:
-3.55 Richmond gears
-Auburn cone limited slip diff
-New Axle bearings and seals

Haven't driven the car yet, but he only charged $170 about two years ago. It's worth asking around at car shows to see who has the tools and capabilities.

That being said, hopefully my gears don't whine...