About $400 a month. A little more but I'm not sure exactly. That's for 3 people.

We probably spend around $1000/mo for a family of four. Our bill probably hasn't changed since I switch to this way of eating. We've tried to do organic produce for a long time - trying to get the kids healthier snacks. We buy grass fed beef from a local farm and eggs too. Haven't had much luck finding chicken yet.
If we buy 1/2 cow it is $3.50/# plus the processing fee. I'm saving up to do that - right now I buy by the cut which ranges from $5/# for ground beef up to $10/# for sirloin steaks. Not the cheapest but cheaper than in the store for the premium meats. Plus it's grass-fed and the normal grocery store stuff isn't.
For us the biggest change is that we are not eating out - so overall - I'd say we are well ahead. We were getting close to eating out 3-4 nights a week - now it is once every few weeks.

I spend between $1000 - $1500 per month, depending on the timing of certain orders (e.g., buffalo meat, paleo snacks, etc). I consider it an investment with almost immediate payoff.

$80-120 a week for weekly staples (produce, eggs, milk) through the co-op service.

$500 every six to eight months or so for a 1/4 cow ($4-$5/lb), $200 every 2-4 months for chicken, sausage, pork chops, and cheese, and $50 every year or so (give or take a couple of months) for a box of butter that goes on sale every so often (ends up being about $1.25 per pound of butter). All of which we stash in the freezer until we need it.

Toiletries and whatnot are more or less pay-as-you-go stuff that I buy as needed, and hasn't really changed due to diet.

Like others have said, you have to pay for your food choices one way or another. So, you can either pay possibly a little bit more now for higher-quality foods (and maybe even not, depending on what you can find), or you can pay a lot more later for doctor and hospital visits, insulin and other Diabetes consumables, statins, and other medical stuff for issues caused/exacerbated by a diet that fights your body.

I'm not sure but it's been a LOT. We started 2 weeks ago and I had to purchase pantry items. I know the cost won't always be so high but I'm slightly in sticker shock at the moment.

Good morning! I did the whole30 last month and it cost $1049.00 for the month. I thought it was crazy but I ate really good, alot of organic and fresh caught fish. I'm on my 4th day of another 30 days and this time I'm going to try and keep my costs down. This total was pretty much for me.

I would say it averages out to about $800-900/mo for two adults and a 5 year old. I do quite a bit of canning, freezing and dehydrating, so buy large quantities of produce in season, plus we buy meat in bulk from farmers, so those are all big expenses at once time, but get used over the whole year.

I certainly *could* do it for quite a bit less, but am completely spoiled by the availability of wonderful local foods around here and take full advantage of them. It's much better quality than I could get at the store, but it is definitely not cheaper. I think it's worth it, though.