If you dig deep enough, you can figure out how it works. However, the player, as you note, has no reason to dig deep into how the market works. Therefore, to most players, the market's system is invisible. I was trying to think up mechanics that would make the player care. Trade missions can help, especially if it translates into more ships or weapons on the market, in addition to making money, which is something the player can appreciate. Something like 'X planet needs N amount of metals, rare metals, volatiles, and organics to upgrade its defense forces.' After the player completes the mission, the market has maybe a 50% increase in produced weapons that month, or maybe a few new ships on the open or military submarkets.