This episode brought my first gripe with this show, which is quite remarkable considering we are already 5 eps in. Namely the overlord is a part-timer subplot. He complains he doesn't have money, but since he's a level 100 player, he must have tons upon tons of gold, silver, and precious stones stashed away. So what if the coins are foreign? Just melt them and cast into bars so nobody is none the wiser when seeing them. Gold is gold. A coin from medieval times was only worth as much as the metal it was made of is worth. Something costs half a silver? Snap a silver coin in half, and voila! There were coins only because it could save a little time from weighing, thus speeding up business, and various powers liked to feel proud with their own coins.
I don't expect him to toil like a n00b for a moment, though, so I guess my worry is purely academic. We are already seeing a third power that's going to mess with his first mission, after all. In the end he knows so little that no matter what he's doing in the city or no matter who he's talking to, he's always going to learn a lot, and that knowledge is what he's after, the money doesn't matter.
Well since I've read the LN I don't know how much they'll expand on this but he has a few reasons for not using any of his gold, they just skipped it in the adaptation so far. Just felt like mentioning that it's more because of the adaptation than his actions.
You are here alone again
In your sweet insanity
All too calm, you hide yourself from reality
Do you call it solitude? Do you call it liberty?
When all the world turns away to leave you lonely