i believe play-asia offer the cheapest price among all 3 sites.somemore they are giving fre shipping.i see no problem with the slow shipping since they are using normal airmail.at least,its free!
furthermore,why is EMS so fast?because we paid for the speed service.so,we can't complain much bout the normal airmail although its near.
don't forget that they still need to follow their postage procedures,so there is some slight delay in shipping them to your country.