In the USA I mail by Priority mail and expect the person I am trading with to do the same.
Overseas trades go by airmail.
I never use land mail in overseas trades. I am interested in puzzle based adventure, mystery, sci fi games, horror, and some role playing games. Even if it's not on my want list I am open to other games so try me. I am willing to combine games to get what I want within reason. I also collect postcards from all over, so I'll ask for postcards along with the game.