Lots of good videos on the internet on how to do it yourself. I did my own after watching a few.

If they are not twisted badly, bent or pitted, doing it yourself just takes some time, patience and practice.

Small body hammers, a good set of fine files and a comfortable work station, I have a adjustable bench top and a comfy chair, helps a lot to.

As for polishing, get a true polishing motor, not your bench top grinder, and put it on a stand where you have room to easily move the parts around!