I have been feeding Nutri Source Performance to my dog since November last year. He used to eat 5 cups Purina and was too skinny and had a dull coat. Now he eats 3 cups NS is perfect weight and has bright shinny coat. I buy from wags.com with free delivery in 2 days for about $52.00 for a 40 lb bag. Cannot imagine $75 per bag....just search on web.