Although not as important as PayPal, it is also a benefit to have an overseas postal address.
Again we are fortunate that NZ Post has been pro-active in this regard in helping many purchasers have the ability to buy products from overseas retailers who do not ship outside of their country for one reason or another -
I have found the shipping costs of YouShop to be a lot cheaper than many of the retailers who do ship overseas -
Again this is not essential however it gives you many more options when it comes to purchasing overseas & remember a lot of retailers in the USA for instance offer free shipping within their country. So having it sent to your YouShop address costs you nothing and the shipping costs from YouShop are hard to beat -
There are also many alternatives but YouShop works for me and it might end up being great for you. More information available here -