In our area, used goods sellers (including pawn shops) have to:
1) send details about all goods in certain categories they acquire to a registry maintained by the local police;
2) hold those goods for a certain number of business days (usually more than a month); and
3) confirm that the goods are not flagged in the registry as being stolen before they are re-sold or redeemed out of pawn.
Otherwise, they risk charges and/or losing their business licenses.
As a result, it is a pain to sell your used equipment through a store, and the stores have to put a lot more work into selling used equipment, but on the other hand a fair amount of stolen property ends up being recovered.