Valv. SynPower $17.50/jug at Wally two days ago. Tonite, $19.
I understand the comments above about worrying about a few dollars for something you rarely do (OC). I stop and get an ice tea, and the above savings on a jug gets wiped out. But I'm not worried about paying $5 more per jug in a couple of years. I maintain four cars (at my expense). If those jugs double in price in the next three years. then that's no longer ice tea money. If there's no serious inflation - then fine - it's pretty much risk free, unless that jug significantly drops in price (fat chance).
Plus, to multiply the savings, I've (as of tonite at Sam's - my first $302 bill there) started doing this across the board. I was already late on several items. If you've noticed, several items have climbed several dollars in just the past few months. The past few wks for other items. Toilet paper and paper towels - were $11+, now close to $16. A flack of cokes were $8+ a few wks ago, now $10+ (passed on those). Also, I was bummed to find at Wally tonite that my vacuum cleaner bags had significantly bumped.
Prices may actually go down a bit (maybe) in the short term like they did after 9/11 to woo shoppers to spend money - but after the short term this thing could get ugly. If not, then at least I won't get caught on the toilet without the needed paraphernalia anytime soon.
BTW - Mobils FAQ sheet states their Syn has a five year shelf life (that's probably true with the others).