I got $126 on Androminion. No human opponent would ever let me get away with that stuff.
I purposefully chose a horribly degenerate Colony deck for that, though. I had Steward, Worker's Village, Council Room, City, Grand Market, Goons, Border Village, King's Court, Peddler, Bridge.
Though, the Bridge was not really necessary. It did help me buy all of the Victory cards and the rest of the 10 stacks. I never had a 14-pile ending before. I still had 2 Platinum left.
Despite all that, I'm not able to work out those puzzles that involve perfect shuffle luck. If you make your own luck (and choose big-money AIs), it can get impressive.