That pointer is damn cute. Our neighbor just got his brittany back after 3 months of field training @ $1800.
I came across this pet food review site a few months ago. They seem to be pretty thorough in their analysis without bias. Not saying this site is the be-all end-all for fact, but it's probably a good place as any I found.
http://www.dogfoodanalysis.com/
Dry Pedigree analysis:
http://www.dogfoodanalysis.com/dog_food_reviews/showproduct.php?product=1881&cat=all
Dry Innova Evo analysis:
http://www.dogfoodanalysis.com/dog_food_reviews/showproduct.php?product=1602&cat=8
Pretty obvious when you see ingredients exactly why one costs more than the other. Yes, the Innova is probably 3x the Pedigree, but whether I spend $10 or $30 a month to feed my dog is so irrelevant.