[CatonaPC©]

I don't think buying a Focus ST (I assume you'd be buying one in the UK) and then shipping it out at your own expense is going to work out financially in your favour. Then there is the issue of compliance and my guess a brand new built-for-the-UK car will not be compliant in Australia. But you could park the ST somewhere for a couple of years and then ship it out so compliance could be waived on and old car.

I'm just picking these things up off the top of my head (ie. I could be wrong or I'm not far off being right), but I've read up enough on it to say, the numbers (dollars and time) don't stack up. It would be cheaper to order one here and wait and you won't have to deal with any extra expense with compliance issues.