Welcome SamT. There are many here who can help you with cost if you ask on the Nutrition forum. As for a typical meal plan, mine is really boring but I'm happy with it. It tastes good and is really easy.
B - bacon and scrambled eggs with turmeric and whatever else I feel like that day: cheese, peppers, tomatoes, etc., or not.
L - either sauerkraut and meat (probably leftovers or salami) or sautéed greens in coconut oil and canned fish (sardines, herring, tuna, etc.)
D - meat or fish and veggies
Snacks - nuts, cheeses, berries with cream, etc.
"When the search for truth is confused with political advocacy, the pursuit of knowledge is reduced to the quest for power." - Alston Chase