I previously ordered six AC Delco filters from RockAuto however they just threw them into a box jumbled around and damaged. With an upcoming oil change I didn't want to pay 10.99 plus tax at AutoZone and I also wanted to order an engine/cabin filters. This 12 pack of PF64 oil filters was around 39, so less than 4 filters at AZ would pay for itself. The filters came packaged very nicely actually and tightly packaged within a case that has cardboard dividers in between each filter. No movement in the case and decently packaged overall. I think this is the way to go if you're an ACDelco fan. I'm good for 6 years as I have no plans to sell the Camaro.