It is actually $638.89 AU dollars once you work it out. I've had a good response with getting AliExpress to intervene and provide a refund when I received something sub-standard (granted it was only $25 worth of goods). Just upload proof and they should come to the party. If it doesn't get delivered, you also have insurance with the tracking number, which no one can argue with.

There are a few options if you are dead-set on this guitar.

Make contact with the seller and get a general feel for how honest and responsive to you they are. Ask them if it would be possible to pay through PayPal. Or if they can setup a specific eBay listing for you. There are other guitar sellers on AliExpress and DHGate etc. And if you have good rapport with a genuine seller, who is responsive to you and you gain trust, then you can also show them the link and ask them to organise that guitar for you.

There are heaps of sellers on these sites that engage only a few factories that produce the guitars. They are kind of the dealer i guess, if you look at it in those terms. So chances are all these dealers are having their guitars made at the same few factories setup to do so.