Gold is always a precious commodity in apparent free markets, even if those work in a fictional feudalism. Legions of War, PlayMesh's medieval epic, uses gold as its standard currency. With this gold is the most important thing in the game as it is what you earn from Quests and Properties and what you use to purchase more property and things from the Marketplace. Since people can attack you and take your gold the Legions of War Bank was established to protect it.