I think giving the dimension door an ability like "money conversion" is a huge waste, because not only would it be entertaining to watch this guy try to pawn off the stuff he found in a fantasy world for Japanese yen, there's also no such thing as a set price for anything. Loot is only worth as much as you sold it for, because that's how money works in the real world. It's more interesting to think of the other world as someplace else that actually exists, and not just a shitty, unbalanced VR game built for the profit and enjoyment of a single random guy.
so after reading 7 chapters it's clear this is a bland story with bland characters, comically retarded villains, and the protagonist is handed everything on a silver platter
nice