When someone says that running your own marketing costs "almost nothing", the sentence is half true and half advertising.
It is true that infrastructure has become absurdly cheap. And it is advertising to hide the fact that there are real costs, that some of them recur, and that one of them is far bigger than the others.
This piece is the full math, line by line, the way I would explain it to you across a table. I own a kids entertainment business inside shopping malls and I run my own marketing. I am not an agency and not a consultant, and I earn no commission from any tool mentioned here.
An important warning about numbers, and it applies to the whole text.
Why this text does not give you a closed price table
Because tool prices change, and marketing material with stale numbers is worse than material with no numbers.
AI plans get repriced. Registrars change their rates. Payment gateways adjust their fees. Free tier limits get revised. If I nailed down amounts here, half of them would be wrong in six months and you would be making decisions based on fiction.
So this text does something more useful and more tedious: it hands you the structure of the math, line by line, with what each line means, whether it is fixed or variable, and where you check today's value in two minutes. You fill it in with the prices of the day you are reading, and the math becomes yours, correct and verifiable.
Write the lines down in a simple spreadsheet. Seven lines do it.
Domain: the only mandatory annual cost
Your domain is your business's address on the internet. It is the one line of the math you cannot zero out, and it is the cheapest of them all.
You pay once a year, directly at the registrar, and the amount depends on the ending you pick. Country level endings have one price, international ones have another, and there are expensive endings nobody needs.
Two things matter more than the price.
First: the registration has to be in your name, with your email. A domain in the vendor's name is the mistake that traps you inside a contract, and it costs exactly the same as doing it right.
Second: leave auto renewal on. A domain that expires because someone forgot takes down your site, your email and your campaigns on the same day. That is the kind of saving that costs a fortune.
How to check today's value: go to the site of the registrar you use or plan to use, type the name you want and look at the registration price and the renewal price. Notice that they are sometimes different, with a promotional first year.
Hosting for the site and the landing pages: why it lands near zero
Here is the shift that made all of this possible, and it is recent.
Company sites and landing pages are pages that do not need a traditional server. They can be served from a global distribution network, and several companies offer that on a free plan with limits that are generous for a small business's volume.
In practice, a local business site with dozens or hundreds of visits a day fits comfortably inside the free plan. If the volume ever grows a lot, the paid plan exists, and by that point the site is already paying for itself.
What this means for your spreadsheet: this line starts at zero and will probably stay at zero for quite a while. It is not a trick, it is the current state of the infrastructure market.
The same goes for landing pages. Each new page creates no new cost. That changes the economics of your marketing in a way most owners do not notice: when a new page is free, you make one per campaign, test it, throw it away and make another. When each page is a line item billed by a vendor, you reuse the same one for everything and lose conversions in silence.
How to check today's limits: open the pricing page of whichever service you pick and find the free plan section. Compare its limits with your real visit volume.
The AI subscription: the meaningful cost of the operation
This is the line that actually weighs, and it is honest to say so before anything else.
The AI is your team. It writes, builds the site, generates the pages, produces the creatives and configures what needs configuring. You pay monthly, the same way you would pay for any work software.
There is a quirk worth money to know: the build month is different from the operating months.
In the month you build everything, usage is heavy. Whole site, landing pages, tracking, copy, campaigns, all in a few days. In that month the bigger plan pays off, because hitting a usage limit mid flow costs more time than the price difference between plans.
Once the machine is live, the work becomes maintenance plus the occasional new piece. Then the smaller plan handles it easily, and you step back down.
Think of it as a temporary hire: you hired a whole team for a month to build the factory. Factory built, only the operation remains.
How to check today's value: open the pricing page of the AI vendor you use and look at the available tiers and what changes between them in usage limits.
Email and automation: where the free plan starts to fit
You need somewhere to keep the contacts you captured and to send them messages. Keeping leads in a notebook, in a notes app or in your inbox is losing leads.
Tools of this kind usually have a free plan with a limit on contacts and on monthly sends. For someone starting out, that limit is normally enough for a good while. When the list grows and the free plan gets tight, the cost of stepping up is small next to the value of a list that is already generating sales.
Two practical notes.
The first is that this line starts at zero and only becomes a cost once the business is already working. That is the best possible order.
The second is that your contact list is one of the few marketing assets nobody can take from you. Followers are rented audience, decided by an algorithm. A contact is your own channel, one you can reach whenever you want.
How to check: open the pricing page of your chosen tool and look at the free plan ceiling in number of contacts and monthly sends.
Payment gateway: you pay per sale, not per month
If you sell online, you need a way to get paid. The good news is that the pricing model here is the fairest one there is: you pay a percentage of what you received. No sales, no cost.
Some charge per transaction, some charge a percentage, almost all charge different amounts per payment method. Instant transfers tend to be cheaper than cards. Installment payments tend to be the most expensive, and the payout delay varies a lot from provider to provider.
Three criteria decide the choice, in this order: whether it offers the payment methods your customers actually use, how long until the money lands in your account, and only then the fee.
On the spreadsheet, this line is not a fixed amount. It is a percentage of revenue, which is why it does not belong in your monthly infrastructure cost. It is a cost of sale, the way card terminal fees always were.
How to check: open the fee page of the gateway you plan to use and write down the current rates per payment method and the payout delay.
What still genuinely costs money: ad spend
This line is the biggest of all, and it does not shrink when you fire the agency.
Ad spend is the money that goes to Meta and Google to buy impressions and clicks. It is yours either way, in the old model and in the new one. It is not a possible saving, it is investment.
What does change when you take over the operation is something else, and it matters: you stop paying someone to spend your money and you start seeing, in your own account, what each campaign cost and what it brought back.
How much to put here is not an infrastructure question, it is a business question. It depends on your ticket, your margin and how many new customers you can actually serve. Start with an amount you will not miss while you are learning, and only scale what has already proven a return.
Keep this line separate from all the others on the spreadsheet. Mixing ad spend with tool costs is the mistake that makes running your own marketing look expensive and the agency model look cheap, or the reverse, depending on who is telling the story.
Adding it up: the shape of the math
With the structure in place, the picture looks like this.
Recurring fixed costs: basically one, the AI subscription, larger in the build month and smaller afterwards.
Annual costs: the domain.
Costs that start at zero: hosting for the site and the pages, email tool on the free plan.
Variable costs tied to revenue: the gateway fee, which only exists when you sell.
Separate investment: ad spend, which is yours in both models.
So you do not start your spreadsheet with an empty column, here are the values I saw while writing this text, in July 2026. All of them are perishable, so check each one on the day you fill it in.
- Domain: the price varies by registrar and by ending. Open the price page of the registrar you plan to use and note both the registration and the renewal price.
- Hosting: Cloudflare Pages' free plan, according to Cloudflare's own documentation, allows 500 deployments per month, up to 20,000 files per site and 100 custom domains, and requests to static files are free and unmetered.
- AI: on Anthropic's pricing page, Pro was $20 per month ($17 per month on the annual plan) and Max started at $100 per month.
- Email: Brevo's help center listed a free plan of 300 sends per day, with contact storage well above what a small business uses in its first year.
- Gateway: fees vary a lot by provider and by payment method. Open the fee page of the one you plan to use and note the current rate per method, the payout delay, and whether there is any monthly or setup charge.
Now compare that with the other side. Do not compare it against a full year of agency fees, because that is rhetoric. Compare it in the most uncomfortable way possible: what one month of your own operation costs, against one month of what you pay today.
If you do not know that second number precisely, it is broken down in how much a marketing agency costs per month, and what you get for it, with the list of questions that pull out of your current proposal what it does not say.
The math usually favors running it yourself by a wide margin. But it is only honest if the next section is included too.
What this math does not cover, and we are not going to pretend it does
Any cost comparison that ignores this part is lying by omission.
Your time. Building takes days of focused work. Operating takes a fixed window per week, short but real. If your week is already at its absolute limit, that is a cost, and it is the biggest one.
The learning curve. In the first weeks you will get things wrong. A keyword that should not have been there, an ad judged too early, a page with a badly configured form. Everybody pays that tax. It is smaller than it looks and larger than zero.
Anything that needs genuine technical skill. System to system integration over an API, a webhook notifying another system when something happens, scheduling automation wired to your inventory. That exists, it is useful for businesses already selling every day, and it is not free in money or in effort. It is not in this math, and I would not recommend putting it in your first month.
Production that needs people. Real photos of your space, video with your team, product filming. AI generates plenty. It does not film your showroom.
Occasional specialist services. Accounting, legal, professional photography. They stay exactly where they always were.
That list does not cancel the saving. It gives the saving its real size, and the real size is still good.
How to decide without taking my word for it
The best way to know whether this math works for you is not reading more articles. It is filling in the spreadsheet with today's prices and comparing it with your current invoice.
It is seven lines. Domain, hosting, AI, email, gateway, ad spend, and one last honest line called "my time per week". In an hour you have the answer no generic article can give you, because it uses your numbers.
And after the spreadsheet comes the cheapest test of all: build something real and time it.
What saves money is not the cheap tool. It is you operating, and operating requires the right order of tasks, which is the part that costs months of trial and error when nobody hands it to you ready made.
That order is what the One-Click Marketing playbook solves: the 10 modules in the exact sequence, with the ready made prompt to paste into the AI at each step, from the domain in your name to the metrics dashboard. $147, one-time payment, lifetime access, with the scope declared out loud: it does not cover API integration, webhooks, scheduling automation or execution support, exactly the items that appear in the section above. If you want to see what is inside and what is not before deciding, take a look at the playbook.
To keep going:
- Agency or AI: the honest comparison for whoever is deciding this month, including the cases where an agency is still the right call.
- Is One-Click Marketing worth it? What is inside and what is not, including who it does not serve.