I think you're dealing with Simon in Malaysia, right? OK, what I suggest you do is ask him to quote you all the parts, with the correct freight figures. I assume you'll use sea-freight as this is the cheapest method of transport (but you gotta wait up to a month, due to the shipment time to Australian Ports, esp on the Eastern side).
Next, get a bankdraft to him in the required currency, and send it off by courier or registered post. Make a photocopy of the bank draft, and fax this copy to him with a copy of the courier's airway-bill, and keep the copy for reference in case something goes wrong with the courier. This should help speed up his delivery to you.
Better do it quickly, because there's an increase in the exchange for the Euro's. If he's got your items in stock, it should cost a lot less than the newer items, due to the exchange rates of the US$ against the Euro!
Hope this helps,
PS, not that Malaysia doesn't accept credit cards, but the banks here are rather 'behind' in offline transactions. Also, we've got a lot of fraud here with cards lately, so better stick to the bank drafts! My Amex got copied THREE TIMES this year!!