I am curious as to how USPS Priority International works. Ive never used this service before. Im about to send a huge box of figures to Argentina. Im just kind of concerned because I heard that once it leaves the U.S. border.....it cant be tracked. Is this true? If so...how can you protect yourself from the buyer saying they never recieved the item...or that they were damaged? It sounds like a VERY risky thing to do. Any info/tips would be appreciated!