Edit: The scammer decided to return the gold.. proof: https://i.postimg.cc/d1q6D8Ms/Screens...
We 3 paid 500g each for legendary map spot and the dude just disconnected.
We have reported him, via the official lost ark website's support and I wrote on reddit.
If you know any other ways to report him / make people aware of his scamming, let me know.