I found carnivore became cheap with pemmican. I make it out of the least costly cuts, and tallow is cheap

Eat the way you like, but don't feel this way is closed off due to cost

The old book "the fat of the land" reckoned an average person doing light work needs about 250g of pemmican a day, twice that for people doing heavy work. You get 250g out of 125g each of tallow and bone dry meat, which comes from ~420g of fresh beef and ~135g of un-rendered fat. I don't know what it costs for you but for me it's about $AU5 a day making a kilogram of pemmican per batch

Edited to remove suspect energy values.

I find myself sniping the discount meat in the supermarket, sometimes it goes for up to 50% off here. 100g of chicken will cost about 100 yen, and beef about 150 yen. I also eat a lot of eggs and ground beef, which is cheaper also. But psud's pemmican solution is even cheaper still.

One of my close friends stopped carnivore after 4 months because he missed eating normal foods, but I've the same experience as you. After eating out, I find myself looking forward more than usual to my usual home cooked meat or hamburger and eggs. I suspect it's because I'm less satiated so I start thinking about food more.

It might be personality since I've never needed variety, when I was a student I would make a curry for 7 days and eat it every day until it ran out.

When I have eaten out, the missing thing has always been fat