Durability is based on the time that a player spends in game, whereas time-limit is based on the length of time after an item is purchased, regardless of whether or not a player actively plays the game. The rate at which durability of items is lost is dependent on the price of the item, with cheaper items losing durability at a slower rate than more expensive items. For all items, the time-limit is 7 or 30 days, depending on the item. Durability of items can be restored by using repair points, which can be purchased with credits. Repair points are the only items in the game that do not have durability or a time-limit, and the player keeps the repair points until they are used.