If you're looking for a cheap protein source then look no further than chicken livers! Back when we were living in caves and eating much healthier than we do today, nothing went to waste which includes all the parts of every animal that was killed.
These byproducts of processed chickens are often sold at rock bottom prices since they would otherwise be discarded. They will cost you only a third of the price of butchered steak cuts, not to mention they are super high in vitamins A, C, and iron. Enjoy!