For anyone else in Oz wanting parts I got onto a mob called EZBuy as mentioned above.
Placed the order for Belt, rollers and 4 filters , all matching part numbers and delivered it came to $284.07aud , $29 of which was their fee , $54 was freight and they claim to have it to me in " Typically it will takes 3-4 days for items reach to our warehouse. When we received the items, we will arrange shipment to send out items and it would takes 7-10 days by economy air shipping. " (snipped from email)

They also use PayPal which is a plus

Best price I got from dealers here was $563 + freight from Melb. so a considerable saving if it all goes to plan.