If you look at a movie universe like the John Wick universe, they have these coins that are worth far more than a wad of cash might. I don’t know what the value of one of those John Wick coins is, but it’s possible that a “merces” could be equivalent to some other amount of real-world currency, or it could just be a sort of barter and exchange chit type of currency where a given job is worth 2 or 4 or 10 of these chits.
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