How wrong can one be LOL. It just plain happens that protein powder is THE CHEAPEST way to get protein. Also, it just plain happens that I cannot get refigerator with me to gym. And all scientific facts and my own experiences point out to the importance of getting some energy, carbs and protein within 1h from exercise. As I don't need refigerator to get that early post-exercise energy from powders, and as it's dirty cheap, those are THE LONE REASONS I use protein and maltodextrin powders post gym exercise.
Tell me a cheaper and as easy way to get some energy and at least 20g of protein within 30mins from exercise. I'm more than happy to get an alternative to powders!
That's one of the quandaries for lifters - how to find a cheap good source of protein. There isn't one right answer because it's gonna depend on where you live, cost of living, where you shop, if you order food online, etc. For me, personally, one of the cheapest source of protein is buying a 10lb pork roast with bone in. On sale, it's 99c/lb so that's a pretty good bargain. After roasting, I can easily throw some shredded pork in between two slices of bread, and make a quick sandwich. Or I can make more complex things like tacos, burritos, or any type of dinner recipe I would normally use chicken.
I only spend 15 min to prep the pork roast (add spices mainly - salt, pepper, paprika, garlic, etc.), and maybe 20-30 min to shred the pork once it's done. It'll last me a really long time, and I find it's easier than cooking chicken. I think the work is pretty minimal, and I get to eat real food (juicy shredded pork sandwiches, etc.) plus it's cheaper than protein powder. The only thing comparable is roasting an entire bird, but if you can get the pork shoulder on sale, it wins hands down on almost all areas. Plus with the leftover big bone, pork fat, and pork skin, I'll just add some water and let it simmer for a day and everything will render into a delicious and rich bone broth.
Other than that, I'd say eggs used to be one of the cheapest sources of protein, so this was the bread-and-butter for many lifters on forums for years. Easiest is making 3 x-large eggs sunny side up or over easy which gives about 19g of protein.