These devices are in use all over the world. They are manufactured in the far east. They are for a legitimate use.
If criminals now have them it is far more likly that they have got them from dodgy car workshops than from Bulgarian Ebay. If only all criminals were stupid enough to provide a their address and their own financial details.
So a Sky reporter found one for sale on a Bulgarian website. That proves zilch.
As I said, just an excuse for EU badhing.