Well, as a programmer (and physicist) myself I know it is very hard to write an AI that always does the smart choice ánd being able to feel human to a player. So I understand that the AI would have a much lower market fee, but getting stuff for free is a dangerous type and that could snowball to some redicoulus stuff.
To get to the galactic market, the market fluctions look like a heavily damped pendulum system in which the damping is so fast that within about half a year to a year the prices of the galactic market are back to normal. I would fix this by reducing this damping, in other words, slow down the effect of going back to an original price. What I would also add is adding some kind of braunian motion on top of the resource price in the order of 10% to simulate private investors.
To get to the galactic market, the market fluctions look like a heavily damped pendulum system in which the damping is so fast that within about half a year to a year the prices of the galactic market are back to normal. I would fix this by reducing this damping, in other words, slow down the effect of going back to an original price. What I would also add is adding some kind of braunian motion on top of the resource price in the order of 10% to simulate private investors.