Electrical conversion from European to USA
This is not a smart way to go at all, except for devices that only need a cord conversion (the inputs are already rated and labeled for 240V 50 HZ input as well as 120V 60 Hz.) 

Some, but not all, TVs and DVDs might qualify. Virtually no kitchen appliances do, and you will waste a great deal of money trying to convert adequate power to run them. Save money on moving and not trying to tilt at windmills and sell them before you leave...