Are we being ripped?

[arthurhh]

The voltage difference is not such a major concern these days unless it is a unit which uses a built in PSU. Most items are using Wall Warts (plug packs) and they are easy to match with a New Zealand unit if the US unit is not multi voltage. Most things these days use a switch mode type PSU which will work with any input from 100vac to 250vac. (not PC's though only lower current units)

[Luap]

For mine, I bought a plug pack locally and threw away the US one.