My old white Sky+ box has died, sky are charging £199 for a new HD box or £60 for a engineer to come and fix this one. After looking on ebay and seeing the HD boxes be about £50, it is very advertising to just buy one of these. If i do, would they work straight away? do I need to get a new sky subscription? If it is any help, i also have a sky hd box in another room too.