There are no legal reasons why they can't export it to New Zealand - if I went through a remailer as I did with my Archos player, I could get it without restrictions. The point I'm making is that there is nothing stopping them; export it over to the country and put a disclaimer that it is the customers responsibility to pay any taxes, duties or ensure that any local regulations are abided by and warranties for said products outside the US may not be valid. They could do that, but they don't.
I've sold things over seas for years - the so-called 'legal quagmire' that you're claiming does not exist in the case of electronics.
Sure it does exist. Be an actual company and try and sell a computer system meant for a country like the US, UK, AUS or NZ and make a direct sale to an entity with an address in Iran. Or North Korea. Or Cuba [from the US] At one time, the grey front with stripes PowerMac G4 was considered a weapon by the US government because of the computing power it had, it had additional export restrictions put on it.
You can sell personally overseas as long as you don't run afoul of broad restrictions, but if you are a company with contracts that do include clauses that control market areas, or you have customers in other countries whose laws are different from your own, you have restrictions on electronics and baby wipes.