At KMart today I saw Pennzoil Platinum (some with Pure Plus, some with previous packaging) for $23 for a 5 quart jug. The individual quarts were less than $5 a quart if I remember right. Some had the fuel rewards stickers on them. May not be the best deal ever, but I haven't seen the new Pure Plus for that cheap yet. Hopefully that is helpful to some.
2003 Cavalier 226k miles Mobil1 5w30 HM ACDelco Filter
1996 Mazda B2300 205k miles Valvoline MaxLife Full Synthetic 5w30 Motorcraft Filter