There was a post, about Lithuanians, selling commands on fleabay, with the markings on them, well, As I know the Lithuanians, They buy broken, written off, and flooded cars, fix them and sell them. The ones, that are not fixable, might be for spares/breakage.
They even have tried to make the business in UK as far as I know, of repairing cars (making one from two or even three) and then selling them.
But it's not a surprise someone is stealing the command units from mercs, because they're more then £1000 from officials.
Well, The same thing with the smart-cars, They being stolen very often, and as well, the wheels from them being nicked as well.
But I haven't seen a signs of people finding that.
For example this car was stolen:
http://www.smartsrus.com/srus/416_Road_Rage.html
But it has limited edition bodykit and the color is distinctive, but noone saw it again. The same I can say about Smart Brabus wheels. Plenty of them stolen, and none found.