Shipping a car isn't all that much depending on how you do it. I shipped a Toyota hilux from England and it only cost 1300. From Germany, my dodge truck(non military) was only 950. Both were done via boat and took about a month to get. As for PA DoT. They are fairly strick when it comes to car from another country. If you ever do decide to sell it, I call first dibs!
edit: WAsn't thinking it through. That Australia is a bit further away then where I got my stuff from.
2002 WRX Bugeye
2013 Mazda CX-5