MoP : les anciens donjons rapporteront moins d'or

Old raid gold nerfs

In general, enemies in raids and dungeons drop significantly more gold than outdoor foes, specifically because we are assuming that the gold is going to be split 5, 10, or 25 ways. As player power rises over time, it obviously becomes possible to complete old content with significantly fewer players, such that the gold rewards become disproportionately high.

In the past, our only solution was to drastically reduce the gold dropped by legacy content across the board (e.g., Magtheridon, much of Karazhan, etc.). In Mists, we have a new system in place that normalizes gold yield based on the number of players involved in the kill. If a Black Temple enemy drops 100 gold today on live, and you kill it with a 25-player raid group in Mists, it'll also drop 100 gold and each player will get 4 gold. If you solo Black Temple, that enemy will also give you 4 gold. If you do it with 4 friends, it'll drop 20 gold and each of you will get 4.

In other words, the gold obtained from killing raid or dungeon creatures no longer depends upon how many people you bring, or do not bring, with you. This system does not apply to anything in the outdoor world.

Source : Blizzard