Got 2 @ $17.88 last time I was at Wal-Mart, add 2 quarts @ $4.30 and you get 2 oil changes for $23. Well, then you add the infamous K&N filter for $10 and you quikly jump to $34, but you still save about $10.
The guy at Wal-Mart told me they only have them a couple of times a year, and the local stores were all out of 5w30 (Blue) pretty quick. Lots of the Green and Red stuff left though. Check the shelf on the cases while your there, you might get lucky, liek I did, and find the cases mis-stocked for $14.28.

Unfortunately thy only had 2 left though.
On a side note, found this thred on VW Vortex,
Here . I am by no means a chemical engineer, but does anybdy see any merit to this?