ArcheAge has an interesting economic system, which is what attracted me to the game the first time several years ago. It’s a system where players accrue a finite amount of labor, which is then spent in tons of subtle ways throughout the game. It takes labor to identify items, labor is required to open purses with extra money or looted boxes with random trade-goods, and of course labor is spent producing raw goods, refining them, and then converting them into usable items. Players even pay taxes on property using a direct conversion of labor to tax certificates.
Content retrieved from: https://www.mmorpg.com/archeage/columns/archeage-unchained-and-the-land-rush-1000014081.