In my area, I have yet to see one in Pep Boys, O'Reilley's, or the K-Mart. High Mileage and OCOD Frams are all over the place in these same stores. I wonder if the Extended Guard is just out-competed around here by Bosch, Mobil, Royal Purple, and other high-end filter lines. Any folks, especially those in Southern California, know who sells these the most? I understand it is a robust filter, but posters here often say the competing lines are a better deal for the money.