It varies upon the condition and age of the Vertex Magneto. I am not sure what others get. Bill taught me how to rebuild them. Like a Secret society & sworn oath you do not disclose secrets. No one does online. $400 - 500 in parts often required. I can not give a full assessment till the Vertex magneto is in my hand. Full inspection. Spin test on my SUN distributor machine. Teardown & inspect all. Most found are worth rebuilding. Once rebuilt by me they will work for another 50 -100 years. Also a Doomsday Ignition. It will work after a Nuclear Blast. MSD will not and & nothing else will. Mags were used in all WW2 Allied Planes for a good reason. Able to withstand Direct Lighting Hits in the sky. Happens to MSD your going down to the ground & explode on sudden impact.