I would agree, this way of eating is clearly more expensive than padding out a meal with pasta/rice/potatoes, and restricting the amount of meat/seafood/fish/vegetables in that meal as that is the more expensive part of the meal
So today I had a large tuna mayo salad for lunch, I never eat breakfast and I had a cheese, chorizo three egg omelette for dinner, with a side salad, dressed with olive oil and balsamic (I'm well into keto so can have balsamic) I'm not remotely hungry. I also did forty five mins of cardio today
Tomorrow I'll have a chicken casserole, chicken thighs, peppers, mushrooms, roasted in olive oil, garlic and chilli, for dinner, and likely a veg on the side. No idea what I'll have for lunch, will see how I feel. My husband will have the same dinner, but with potatoes.
On Friday I will make a bolognaise for dinner, and eat it with cheese on top and a side salad, yum. My husband will have pasta with his.
Saturday we normally go out for dinner, and I like steak, mushrooms and a Greek salad with feta and olives at our local pub. However whatever I have they have no issue substituting the carb element for a dressed salad or vegetables.
On Sunday I'm doing a roast beef, I also do a broccoli cheese, and garlic mushrooms. Potatoes for husband.
Another fave meal is roasted salmon fillets with stir fried veg.
Lunches, tend to be salads, with either meat, (salami, ham etc) cheese, egg mayo or hard boiled eggs, tuna, olives etc. If you like soup then home made soups are easy to make low carb.
I don't tend to snack as I don't feel hungry but you can eat,, olives, cheese, meat, cucumber, full fat Greek yoghurt etc,
For me, I don't see why my diet would be healthier if I threw some pasta, potatoes or rice in there. 🤷♀️
Booze, I drink on a sat night when we go out and I tend to drink either dry white wine, something like Pinot, or vodka and Diet Coke.
Biwis boot camps are great for recipe advice, I'm not in boot camp, because I'm well into keto and know what To do to either maintain or drop weight. I also work out six days a week, so clearly don't lack energy. I'm currently bringing myself back down to a ten from a twelve as I had a rather sociable eat what ever summer.
As for evangelical, I think if people find something that's easy to stick to, helps them loose weight and be healthier, gives them more energy and kills the cravings to over eat, then they are going to try to help others.
I have a friend who does slimming world. In all honesty I find the recipes bland as it's all fat free. But she's evangelical about sin free stuff and loads of buzz words. It works for her, it wouldn't work for me. I think whatever works for you.
But is it more expensive than padding a meal out with carbs like pasta, rice or potatoes, yes clearly.