I have noticed that RodParts doesnt even give their location in their ads......but the area code is somewhere in Iowa.

It appears that a bunch of these "warehouses" should be called "houses" since they only take the order and then they order the parts..... I have noticed that a lot of the parts are drop shipped from other locations.......indicating that they dont stock much (if anything).

Given that, they must be accumulating a bulk order from their ads. That means that they wait until X number of Zirgo fan orders come in so they can place a quantity order from Zirgo...

Usually these folks only offer competitive pricing....not much else in the way of service.