On your chart, the last time the green line was at $40, which was for a very small amount of time, the line shoots up drastically. After that, the line hasn't retraced back to it's origin of imbalance. Maybe your all-in value is restoring the balance, but who knows. Really, though, supply and demand have nothing to do with poker. I haven't looked at a poker chart in a long time, so it's really interesting to see similarities between poker charts and financial charts.