A converter will step up 110volts to 240 volts so the european machine will run. Likewise converters also step down the volts from 240 to 110 so we could use our appliances in Europe. It is nothing more than a transformer.
Candace I understand your reasoning, but if the price is right It would not stop me from making the purchase. It is no different than plugging in your answering machine into a 12v converter into a 110 outlet, or a radio that uses batteries and can be used with the 6v or 12 volt converter into 110 when you don't have batteries.