Looking for novel where mc has a system where he can trade to other people that also has the system in ownverse/ multiverse. Though I prefer it sets on apocalypse No BL
Lord of the Mysteries has something similar. The MC doesn't have a system, but he has accidentally creates a secret organisation and calls people into a mysterious space where they can trade things/information.
there was a manhwa where the guy started selling electronics in the system but I forgot the title also the one where mc was a vip member and could buy mana stones for cheap and sell them for profit because of the lower commission