So far i have collected 3 Vx and 2 V's (excluding my wife's one)...total cost should be around 5 € (the first one was collected just to be sure to have a spare, but worked after a quick charge) all of them are working fine, but not holding the charge for long.
Big troubles are batteries and digitizers, so you will probably end with a bad battery and nice case.
Wake up alarm !!