My Stihl dealer stocks filters for all of my saws, but 30 bucks is a deal, I pay upwards of 40 for the 041av, I think because its an old saw. My fav husky dealer stopped carrying huskies and parts, and is now a straight up Stihl guy. I guess something about parts availability and prices. I found that in a pinch a car oil breather filter will work fine on a 372xp. Probably not the best thing to use, but when you cant get it, you cant get it.
Speaking of Stihl right, I was in my dealers shop the other day, and a guy brought in a 2 week old 044 that he let his son in law use, the kid straight gassed it..terrible, I felt for the guy.-Matt