The box has to be insulated enough to stand up the harsh handeling. I have seen horror film clips of how "handle with care" actually happens, and it's like we have to prepare for our parcels to be thrown out of planes. I would double check that buyers in US are aware of the votage differences, motor and pedal have to be replaced. It's different to go from 220V to 110V, than from 110V to 220V, but it's possible. The upstep adaptors are larger bulkier things than the other way around.
