As we know there is that most 30-50 players don't think to use the Agency because they are new in Runes of Magic. And if they aren't new players, typically the 30K the yellow item is worth isn't enough for them to care. Most of the bomb money ends up in the hands of those who sell popular crafting supplies. And that's the absolute truth.
When someone goes to market and buys 100 Dark Stones 5K each and 100 Silver 2K each, they spend 14K to make 900 bombs that sell for 18K. Take out the crafting fee, and that's a bit over 3K profit per craft, and at 50 crafts, that's 150K profit, give or take. But the miner that sold those just earned 700K minus taxes. Just like that.
Then they can't return to the agency in an hour and repeat the process, but that's still proof that most of the 850K created went into the pocket of someone who wasn't crafting. Any level can go AFK for a week after purchasing a golden pickaxe and three more pages of inventory space. But the high level(runes of magic gold) crafters are almost high level characters, interested only in the top levels of equipment, preferably ones crafted with a high mastery.