I actually did not expect that outcome. Some variation yes, but not an actual power law distribution (each actor has the same chance of being a buyer as a sell

I actually did not expect that outcome. Some variation yes, but not an actual power law distribution (each actor has the same chance of being a buyer as a seller). But as I stated, every one started out with the same amount of money, and there were runs where the amount paid was identical in every case. Still got a power law outcome.