I'll join in the discussion being that I was one of the first pioneers into the world of the ebay CAI. You're right in your argument that we didn't get the injen because of the price. But try to understand something... when we see the injen going for 200+ dollars, and than some ebay "knock-off" comes along and charges only about $60, don't you think most people would go with the ebay one? That's what I did, and the only difference that the two have are from the name. We can easily replace the filter for a better K&N, and yet we still will be under $100.
Seriously though, don't knock on the ebay CAI because you paid more for your injen. We are very satisfied, and we are just letting people know of how the product is well built and the same.
This isn't a flame at all... don't take it that way. Just understand that for those who don't wish to spend that much on an injen, the ebay CAI is the way to go.