World Visiting system

[Penthea]

I'm also concerned about this. People can just purchase something in a destination world for cheaper, move back to their own, and resell at a higher price.

That would only work if the buyer doesn't know they can visit another server, doesn't know they can use another server's mb, or is feeling lazy and cba to go to another server. Personally if I find something is too expensive I'll do what most people do irl and that's compare prices from other places.