I just ordered the new Sawyer Mini from Amazon. On sale for $19.95 or $24.50 with shipping.
http://www.amazon.com/Sawyer-Mini-Wa...eywords=sawyer
I found a few other places too.
http://www.fourseasonssurvival.com/s...mini&search=GO
http://www.highwaterfilters.com/Sear...ch=sawyer+mini
(this one may be cheaper with free shipping?)
http://www.ebay.com/itm/NEW-Sawyer-M...item5d442b8b58
http://gossamergear.com/etc/hydratio...er-filter.html
(coming Sep 20)