[Pitlove]

http://www.chewy.com/dog/nutrisource-large-breed-puppy/dp/38141- $1.56 per/lb

http://www.chewy.com/dog/taste-wild-high-prairie-puppy/dp/34836- $1.19 per/lb

http://www.chewy.com/dog/whole-earth-farms-puppy-recipe-dry/dp/101864- $1.19 per/lb

These three foods are safe for large breed puppies and could fit within your budget. Chewy.com has great customer service and they ship fast. Many of us have used this site frequently.