Auto parts suppliers have following type. 1 used car parts. Those companies have a junkyard and they disassembly the vehicle. They sell the used parts. MTO has required those parts contains safety must be signed on it and registered after sold. The rest of parts should not be marked but most of them will be marked for easy to stock. 2. Dealer shop. Dealer is the only can purchase manufacture parts form factory. They could sell parts to independent mechanic. 3 shops like Canadian tire and war mart. They sell the newly after market parts. The prices are varying. Most of inexpensive autos after market parts are cheaper than manufactures. But some of like Mercedes Volvo after market parts are expensive than manufactures; because most of them are designed for increase the performance.