I just bought a samsung ssd 850 evo 500gb and I got it today and I upgrade the mac pro mechanical hard drive with the ssd drive.
I used to do this way.
1 Amazon usa free shipping to youshop address which cost around 6 days
2 youshop ship to me which cost around 6 days and the shipping price is around nzd$22
Now I ship the item directly from amazon to nz
The shipping cost is nzd$5.74
The shipping time is 13 days
That is a saving around nzd16 compare to using youshop.
If I buy the item in auckland, nz. I am pay around nzd40 extra and I will get the item in the shop in person.
The ssd drive including shipping cost less than nzd400. I don't need to pay gst for that.