Agree that profit margins can be very thin, but in this case the Fiero guy is probably doing pretty well. If the Fiero parts guy is primarily selling to end us

Agree that profit margins can be very thin, but in this case the Fiero guy is probably doing pretty well. If the Fiero parts guy is primarily selling to end users (which it looks like he does), his profit is probably closer to 33% per item. Standard markup for auto parts to private customer is 1.5x Source: Family run auto repair shop for 20+ years.