I would guess that what Jfkheat means is that if these are exact and I mean exactly like the originals and even the most critical eye can't tell the difference then what happens to the value? I would assume that trademark and part number infringents were taken care of when the original tooling was purchased
Still, IMO nothing beats original parts, even if the repops are exact. Deep down inside the buyer knows they are not. I guess no harm is done if people are honest
about where the parts originated.