Is it a chipped box or fake card?
I don't think the box or cards can be modified anymore
you cannot get free Virgin TV from a modified box or a 3rd party reciever anymore virgin media has somethink called nag3 (nagravision3) that kills all illegal boxes, eurovox, starview, dboxes etc,etc,etc 100% illegal to sell there boxs
It remains their property even when your contract has expired If you were caught selling it you could be charged for selling stolen goods.. If you read the eBay T&C selling cable boxs is against their rules Virgin boxs are rented from them, and are Virgin's property If you cancelled your contract with them they would arrange an appointment to collect the box from you as they want it back, This is why eBay say boxes cannot be sold.