Picking the right dog food

Our dog is always been particular on what kind of food she likes. She is a Shih Tzu poodle. The unfortunate thing is that her food is very expensive. Luckily she doesn't eat much. The other day we were at tractor supply company buying a trailer hitch and I noticed one of the dog foods there the ingredients were the same as the food that she already has but about half the price. We picked up the small bag for her to try it and she gobble it up. So now we know what brand to get her all the time.