I don't know if anyone has suggested this, but to make money Evony has to to target an area where everyone will have to overcome. Said area is Honor medals.

People can get any other medal easily, but honor by far are the hardest to acquire. Numerous $14 purchases opposed to an odd $24 purchase is far more profiting. You need more honor medals then just about any other medal for titles/rank.

Oh, and your best bet is level's 1-3. Level 4's and 5's are meant to drop Courage, and Wisdom Medals.