The mistake each MMO does is to offer gold as loot . Loot from PvE shouldn ' t contain gold . It should contain other items , that ingame vendors can buy for gold . In that way , currency can easily be controlled . The game can count how many items are sold to vendors , and for those items that are aplenty , their price shall dynamically drop , and even reach zero if there is too much of an item in the game . Gold should be part of loot of unique events in the game . For example , a huge dragon that guards a treasure chest , or a sunken boat . Once these are done , they shall reappear after months , in accordance to the game ' s lore . I ' d dare say that every resource in the game should not be replenishable immediately , i . e . at next server start . Resources must be replenishable according to the number of players that log in the game or after a certain time has passed . For example , a tree that gives timber shall be replenishable only at the start of the next season . Recipies shouldn ' t require gold . Becoming rich should be the result of either building an economic empire based on trademanufacturing , or on being a villain , or extremely lucky . It should not be the result of grind .