Oftentimes an MMO has a virtual economy, where players trade in-game goods. There are various degrees of markets depending on the particular game. Eve Online has a robust player-driven economy, where some players manipulate the market for their own financial gain. Whereas other games rely on simpler auction houses.
What is 'Imprest'. An imprest is a cash account that a business uses to pay for small, routine expenses. A fixed balance is maintained in the account, and it is replenished routinely to maintain that balance. Alternatively, an imprest can refer to a monetary advance given to a person for a specific purpose. Next Up.
The imprest is periodically replenished. See also: Petty cash. a system used to control the expenditure of petty cash. An opening balance of petty cash (called the imprest) is made available to cover the petty cash expenses for the next accounting period. At the end of the period, whatever cash has been spent is replenished to restore the petty cash balance. This system tends to limit any losses, for example, via fraud, because the maximum that can be misappropriated in any one period is the imprest or opening balance.