Currently have a gift card for rock auto and I it's been 2 years since I did engine and cabin air filters so I figured it's a good time to buy them. Looking at the different parts they offer it seems prices really vary from $3 to $20 from what looks like all are paper filters. Some brands include Ultra Power (cheapest), Wix, Mahle, Denso, etc. Seems like most are china made anyway. Does it really matter in a paper based filter?