Black Market Parts
One of the positive things I have seen is the reduction (about a 90% drop ion the last 5 yrs) in black market second hand 'ketok magic' parts which are stolen , have modified serial numbers or glued on data plates.
On the other side I have a lot of new surplus parts and hardware which I can't sell locally now as they don't have certification certificates which most of the operators need now , they end up being sold in bulk packages ... to the USA .. where they are recertified and live happily ever after.