Are you using it through https://www.primevideo.com/ ?
I'm in Adelaide and can confirm that it works on there. But as I said, the selection in general is really barebones compared to the American one, so you may not find it worth it anyway.
I bought this one with a Starz-related cover in the UK, it's the 10th anniversary text. I would assume the US edition with that cover is as well.
Edit to add: if this is the one on US Amazon you're looking at it, it mentions 10th Anniversary Edition in the Product Details
It kind of looked like this purse, but light gray. I’ll have to try to catch a rerun and snap a pic.
I've had my eye on these for awhile now. On pre-order but almost out! There's also a kind of fun adult coloring book on Amazon that I bought for someone recently.