Change your post to taf instead of afm.

I'm still stuck on $3500 land on this machine. But I think a realistic price would be $4500 us shopped.

Magnet burn would be my #1 concern.
#2 would be mansion insert wear, look for inserts lifting up and edges "cracking".
Dont know if TAF playfields are known for planking, but take a close look at the playfield surface.
Check boards for any crazy hacks/battery acid damage etc. Play a few games to make sure it doesn't re-set. If there is a credit dot, find out why. Check floor and bottom of cabinet for water damage. I always smell inside the cab for any strange odors, like mouse urine, yuck.

Those would be some things I would look for.
I wouldnt pay to have it shopped, youll have all the time in the world to do that stuff yourself.
TAF is a great game. Good luck.

-Riles