How are you going to get it back to Perth? Land delivery cost? Sailing back? you'd want the boat in tip top condition for that trip! How much would it cost to ensure the boat is up to the trip?
Given the WA economy, have a good look around, there's a good chance you'd get a great deal on boats in pens with owners that can no longer afford to pay the pen fees.
Dont know this design, but this looks like a very tidy little boat, and a sail back to Perth from Busselton is very different than from Esperance!
http://yachthub.com/list/yachts-for-sale/used/sail-monohulls/custom-30/181264 Just look at the engine! If it's as good as it looks?