I investigated bringing household goods, and of course had a problem with 230V appliances such as washing machines/fridges/hi-fi etc. I told the people here that I obviously couldn't bring any of that as it wouldn't work, so I'd have to sell it and buy new in the USA. They said that anything new, whatever the reason or justification, could not be brought in duty free. So to date I've never brought anything in under this scheme.