That may be true for retail car parts but not speed parts. 20 percent is the standard WD deal from most companies and some only give you 10% and you pay freight and retail costs out of that. That is why the hardcore race parts are very hard to get any kind of "deal" on. If you can run a brick and mortar speed shop on 20% margins you are smarter than all of the guys that have gone out of business trying in the last 30 years....Todd