Problem with a mail tune is again no one gets to see how his car reacts to the chip. Again all mail chips tell you to go get the A/FR's checked to make sure it's safe.
Toshi is a person who can flash your current tune and dyno it and re tune for as little as $700 re using the stock ecu.
His located in the business traders section and comes from Sydney. Not sure if that helps you because I'm using my mobile and can't see your location