How exactly does buying across worlds work?

go to target, buy nx cards, use the cards, go into mts, buy things. mts doesnt accept paypal. you can also list what you want so that people can come sell to you without you needing to look for it. the mts connects all servers which you know. its treated as one. like buying cs things or buying from npc, all you do is double click.

if you dont want to spend your own money, you can sell things in mts too but it'll take a while to raise enough for a khanjar.

There's that and buying expensive items, server transfering, buying the item you want with mesos, then transfering back. That's REALLY expensive (50 dollars) and it doesnt really work as Scania is kinda the most inflated server (Im having trouble finding things to bring to Windia x_X)