Dont be shy when it comes to scammers. Post ALL their personal details that you know of him.

Real name
phone number
what car he drove when you met him in the carpark and rego
anything you can remember.

It will help other people who know him to give you more details matching his description so you can track him down.

He will undoubtedly read this thread and either be exposed or shamed into giving you your money back

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RS Liberty - Because WRX's are only good for parts...