innovis

So I'm trying to build muscle while losing weight, and I realized I was extremely unsuccessful at this during the fall because I was eating far too little protein.

Now I'm on a high protein diet, trying to work in at least 30 grams a meal (even breakfast), but its kind of expensive. Any recommendations on cheap, high protein foods, preferably low calorie? I'm already all over fat free hot dogs, eggs, turkey bacon, skim milk... lean ground beef... but what else?

Edit:
When I say low calorie, I kind of also mean low fat/carb. I like to have it around the ratio of 1:2:5 grams of fat/carbs/protein