I transitioned from vegetarianism to veganism. I would say it's cheaper because you're more mindful of incorporating vegetables, fruits, and nuts (a great source of protein/fat) into your diet and it forces you to be more aware and strict, and you'll usually go to markets to buy fresh vegetables since they're usually cheaper and they'll last you the entire week, sometimes even longer. I grow my own stuff though. Great protein substitutes are nuts, fish (if you're pescetarian which still is a vegetarian), seeds, legumes, soy (I would not suggest it if you have thyroid issues though), dairy like milk, or even whole wheat bread. There are really delicious veggie burgers and sausages, and they cost the same as normal burgers, except they don't contain that harmful stuff. If they add color, they use beta carotene which is completely natural and safe and it's already inside foods as it is it gives them their color, as opposed to something like yellow 1. Maybe even try vegetarian sausage. In the morning I have cashews/pumpkin seeds whatever is around with black tea and maybe some warm water with lemon, then for lunch I'll have something like a kale salad with cashews, tomatoes, and maybe even some added tofu. That's about it. I don't eat past 4pm my body doesn't agree with it lol. Try educating yourself first. The stuff they try to pass off as food is ridiculous, if only people were more aware.