How about this Nutro Natural Choice Puppy Food? It's on sale for $5.99 at petco for a 5lb bag. Here are it's Ingredients:
Lamb meal, ground rice, wheat flour, rice bran, sunflower oil (preserved with mixed tocopherols, a source of natural vitamin E), natural flavors, dried egg product, monosodium phosphate, dried kelp (source of iodine), choline chloride, vitamin E supplement, zinc sulfate, niacin, ferrous sulfate, calcium pantothenate, vitamin A supplement, manganous oxide, thiamine mononitrate (source of vitamin B1), vitamin D3 supplement, riboflavin supplement (source of vitamin B2), vitamin B12 supplement, pyridoxine hydrochloride (source of vitamin B6), folic acid, cobalt carbonate, biotin.
It has 26% protein.