if Im working on a hyster, lets say I need an accelerator pot. Hyster does not stock it in town. My parts dept will check and see if our aftermarket source has it. I tell the customer that I can get the part from an aftermarket source for 50.00 or I can get it from hyster for 110.00. It wii take 3 days to get here if ordered ground from aftermarket, or 5 days if ordered from hyster. The customer makes the call, and usualy decides to order aftermarket.