tortoise
Wild Hare
If you don't want to cut up meat, chicken necks are a cheap and good base for a raw cat food diet. Once you know your cats will eat it, you can buy it in 30 lb cases at $0.30 - $0.50 per pound.
An average cat needs about 2 chicken necks per day. Supplement with whole raw eggs, plain yogurt and that is the beginning of a safe raw diet. Once there is a nutritionally safe "base" diet, you can give plenty of variety in types of meat and "extras" (the essential parts of the diet in addition to meat).
Are you feeding 3 cats? You should be able to feed 3 average cats for a month and a half on $15, plus "extras" which you can forage for, grow, barter for, or can be leftovers of your food.
9Lives cat food would cost $50 for the same number of days. And I must say canned cat food is completely inferior - but we'll save that for a separate thread.
Save money, reduce waste/recycling, healthier cats. Good deal!

Do read a bit about it. Might help you feel more comfortable about it.
I used to support animal rights until I realized they are a bunch of crazy terrorists. I am still a strong advocate for animal welfare. If you're going to cage/contain it, you must take care of it in a healthy, humane, respectful way!