I don't know about that.. I've moved several times in the last few years, and also had to switch the credit card payment on my account. If it were that simple, I would have have been flagged and maybe penalized for it. My guess is, there's more to it than that. Probably the majority of RS accounts sold would go to a buyer living relatively far away. Now the buyer might change the account details, which might trigger something that ends up getting the account banned right there. But let's say they don't. In most cases, the seller probably has some other account that they use more often, and was selling a secondary one. So, now there are two or more active accounts, with the same account details, being used from two different areas of the world. It would go something like this: Trainee: Look boss, this guy is playing on two of his accounts at once. What do I do? Boss: Probably trading with himself. Give him a temporary ban. Trainee: Wait a minute.. He's playing one account in Los Angeles... And he's playing the other account in Germany. Boss: Yeah, they usually make your job pretty easy.