I spent several hours on the internet looking for the cheapest price on filters and I think I have found the place.
USS Auto Parts
sells all the filters (Air, Oil, Fuel, Trans.) for the Ford, Chevy (oops, did I just say the "C" word?) and Dodge Diesel engines.
Because I run Veggie Oil/ Biodiesel, I change my fuel filter and oil/filter more frequently than most, so I wanted to find the cheapest filters. USS Auto Parts also has their "Grease Monkey Club" which gives you 5% off, as well as free shipping if you aren't in a hurry.
If you do your own service on your truck, I don't think you will find a better value!
Also, all their filters meet or exceed OEM specs.......Dennis