I first noticed this mystery about a month ago. I purchased a SOL Escape bivy from amazon.com, one of those survival bivys with reflective inner coating.
I bookmarked the Escape-bivy-page in my browser.
A couple of days after purchasing, I went back to that bookmarked page, and it stated "this product does not ship to Swan View Australia". Whereas, previously it had stated that it does.
I did a search for other vendors selling the SOL Escape bivy through, Amazon, none of them ship to Australia. I put that down as weird.
Then yesterday, it happened again.
I was looking at bivy tents, these are tents that are double-skin, a bit more than just a bivy. I was paying attention to whether it stated that the product ships to Australia. Note, you have to be logged-in to Amazon to get this information.
I found the Catoma Adventure Shelters Raider bivy tent:
http://www.amazon.com/gp/product/B00AHSRM1A
It stated that it does ship to Australia. I bookmarked the page. Next day, went to that bookmark, and it stated that it does NOT ship to Australia.
I hunted all over amazon.com, could not find it anywhere shipping to Australia.
Then I stumbled across this site:
https://shoppie.com.au/product/view/B00AHSRM1A
...followed the link back to Amazon, hey presto, now it ships to Australia.
I placed an order straight away. That was yesterday, Amazon have already shipped it. Got to hand it to them, very fast delivery, my experience from years of buying from Amazon.
Here is a link to beware:
http://www.amazon.com/Catoma-Adventure-Shelters-MMI-Outdoor/dp/B018RRD7JI
...apart from it not shipping to Australia, they are trying to sell it for twice the price. I also found one vendor in Australia trying to sell it for over AU$700. There are always people who will try and rip us off (I have paid AU$312 to Amazon, including shipping).
Anyway, I thought you guys would like to know about my experience of going through shoppie.com.au.