The Purolator Synthetic often goes on sale at Kmart for under $7. The synthetic filter doesn't tear. However, they're not worth their regular price of $10
Napa Platinum (Wix XP) is on sale this month for $7.99
Of course Napa Gold (regular Wix) isn't too bad, either! You can get them online at filter1.com with free shipping over $50
You might also be able to get Fram Ultra at AAP for a good price (order online with a discount code, then pick up in-store). There is a $2 rebate from now until September, limit 2.