Not just a case of the price of goods fluctuating at the behest of the programmers, the economy in Star Citizen is directly influenced by the players themselves. The actions of one player can have a ripple effect that causes changes to the economy as a whole, sometimes forcing the designers to react to this change in the game’s updates.
In some MMOs, the economy is only of primary concern for those players who prefer to make their money from buying and selling; in Star Citizen, it has an effect on all players. Having an arsenal of massively destructive missiles on your ship may make you a bad-ass, but should the minerals needed to make those missiles dry up, or the ships transporting the missiles from the factories be attacked by other players, you may find the price of these weapons suddenly skyrocket. What can you do about this situation? You could always mine some of the minerals needed yourself, or take a mission protecting the weapon factory's transporters.
Not only will you get paid for these tasks, but the price these death-bringing goods will also drop.