Local produce and meat is rarely ever 'inexpensive', but it's worth it (and if you intermittent fast, then you won't need to eat so much... ) Check out farmers markets and ask around about co-op ordering. There are also farmers from who you can buy 1/8, 1/4, 1/2 or a whole cow or pig, which you can pick up after slaughter and butchering. Good luck!
Which State and area do you live in? People will probably be able to give you more exact suggestions if they know.