No offense, not trying to be mean but the site listed is a complete farce. Many of the ingredients they insinuate are in Orijen are simply not in it. The use of sweet and russet potatoes are carb-substitutes for the corn and other grains that other mfg's use. These are MORE expensive than the others, healthier and less allergically reactive. The joke was revealed when they insinuated the there was alcohol in Orijen!
I'm not a vet and I don't work for Orijen but even all the respondents in the comments section of the above page disagree with the SusanPeters site, I see no reason to give it any creedence.
Check out this site for better (IMHO) reviews.
Also I can't seem to find Orijen around here either but I've had good luck with caninecuisine.com, for Orijen and a lot of other products.