Of course guys, one point that hasn't been made is that if you eliminate TPGs, the card doctors only streamline their deception. Buy a card, screw with it and resell it. I am not sure that it much better.
Also, in the pre-TPG world there was an on-going problem with individual grading opinions. One guy's VG/EX was another's VG ...... or EX. In addition, there were unscrupulous vendors pulling straight up bait and switches. It was tough to prove it where it was one raw card substituted for another. The TPG world is not perfect but I am not sure things would be better without them.
I wonder if there are any possible technical advances available that could actually put card doctors out of business. The U.S. Mint sure has a helluva hard time staying one step ahead of the forgers.........