I brought a Vizio 32 inch TV; it works essentially as a monitor, in that the tuner won't pick up UK signals, but it you have a Freeview, Sky or Freesat box, you hook it up and you are good to go. I think all Vizio TVs are dual voltage - just check the back for the spec. Can't comment on the Polaroid, but it's likely the same as the Vizio.
We were shipping a 40' container, so cost of transport was not an issue, and the small expenditure for a Freeview box was a cheap option compared to buying a new TV. If you are considering shipping TV's only, then the cost could easily be more than buying a new TV here.