I've got no dog in this fight but I can't help but feel that Homepin is getting a bit of a rough ride over the pre-order priority.
Whenever I've bought something large from overseas that has necessitated palletised or crated transport and been offered "free shipping" it is with the tacit understanding by both myself and the seller that I will get it "when there is space on the transport", which could be weeks or even months from now, and that I have no right to kick up a fuss because "when you said it might take a while I didn't think you meant this long", or whatever.
It should be obvious to anyone that shipping something with a significant volumetric and actual weight is going to cost a fair amount of money. Someone has to pay for that, and when it comes to container shipping there is a minimum cost for it to be moved, at which point anything else you can stuff inside it is a bonus.
If, as it appears in this case, there aren't enough customers paying for a container to be transported to Australia - then thems the breaks. You either pay the going rate to have your personal order shipped in isolation, or contribute towards the container cost, or whatever.
It seems to be as an outsider that the problem here is that Homepin offered free shipping in the first place. It's a nice option for people who are understanding of what it means, but fraught with reputational risk because - as evidenced by this thread - as soon as someone gets wind of "someone who ordered after me getting their pin first" they will probably be unhappy, even if they chose to pay nothing for shipping. Perhaps it wasn't made clear enough to people who chose that option that they could end up waiting months for their pin.
Waiting weeks or months for something works for some customers, but it doesn't tend to lend itself to items that have just been released. I mean who wants to wait forever while everyone else is playing the thing you paid for years ago? The time you spend waiting because you didn't want to spend $300 or whatever on shipping you could lose both in early enjoyment (which has a value) or resale value.