The amount of money or materials in the universe is not fixed and, as such, the economy operates under supply and demand. Market manipulation is possible on a large scale, particular examples being ramping and bear raids. CCP does not issue refunds on in-game purchases. Hence, there is always the risk of certain types of confidence tricks or other scams. The economy is balanced by the automatic introduction of extra materials in underpopulated areas. This encourages a more even spread of players.