If you are looking up how to build a sales page, you probably have something to sell (a course, a coaching program, a service) and a link in your bio that no longer explains it. A sales page has one job: move a visitor from "sounds interesting" to "I'm signing up." This guide covers what it needs, compares what the well-known tools cost, and builds one from start to finish: the page for Crumb School, a sourdough baking course, took 1 minute 35 seconds and cost $0.22 in credits, with one small adjustment.
The summary:
| Option | What it costs | The catch |
|---|---|---|
| Unbounce | from $29 a month ($22 a month billed annually) | no free plan; 14-day trial, no card needed |
| Leadpages | from $29 a month | no free plan; 7-day trial with a card |
| Carrd | free account; Pro Lite from $9 a year | the paid plan is billed yearly |
| Systeme.io | free plan; Startup $17 a month | built for funnels and courses, with more pieces than a single page needs |
| Build it with AI (wanno, web app) | the one in this guide cost $0.22 (fits in one day of free credit) | lives on a wanno.dev subdomain, with a "Built with wanno" badge on the free plan |
01. What a sales page needs to convert
A sales page is not a website with a menu and ten sections. It is one page, top to bottom, that answers a visitor's doubts in order. Five pieces, in this order:
- Promise. A headline that says what the reader will be able to do, in your customer's words. "Bake bakery-quality sourdough in your own kitchen" says more than the course name.
- Proof. Testimonials from real people, a short video, results. This is what makes the promise believable, so never fake it.
- Offer. What is included (as a list), what it costs, and why. A hidden price breeds distrust.
- FAQ. The usual objections: "Do I need experience?", "How long do I have access?", "What if I don't like it?" If the page does not answer them, you will answer them in your inbox, one by one.
- Call to action. A button, repeated at the top, the middle and the end, that leads to a short form.
A quick test: read your page on a phone and ask what a stranger would still need before leaving their email.
Sales page vs. landing page. A landing page asks for something small, like an email in exchange for a guide, and it can be short. A sales page asks for a buying decision, so it has more doubts to settle. A good rule: the pricier or less known your offer, the longer the page.
02. Sales page options and what they cost
Specialized tools charge monthly. Unbounce lists its Starter plan at $29 a month, or $22 a month billed annually, with no free plan and a 14-day trial that needs no card. Leadpages starts at $29 a month, also with no free plan, and its trial is 7 days with a card.
There are cheaper routes. Carrd has a free account and a Pro Lite plan from $9 a year, aimed at simple pages. Systeme.io has a free plan ($0) and a Startup plan at $17 a month, with 0% transaction fees and a custom domain even on the free plan; it is built for full funnels and courses, so it brings more than you need if all you want is one page.
The third route is the one in this guide: describe the page in one message and let AI build it, form and panel included.
03. How to build a sales page with AI, step by step
With wanno you describe your page from your phone and the platform builds it. The one in this guide was requested like this:
I want a sales page for my online sourdough baking course, Crumb School: a headline with the promise, an intro video spot, what's included, testimonials, the price in US dollars, an FAQ and a sign-up form, plus a private panel to see who signed up. Everything visible in the app must be in English.
wanno built it on its own: 1 minute 35 seconds, 20 steps, and the page was running on its test link. One follow-up request set the sample price at $149. Every piece from the list above is there: a headline with the promise ("Bake bakery-quality sourdough in your own kitchen"), a spot for the intro video (for now, a loaf photo marked "Video coming soon"), a list of what's included, testimonials, a sample price of $149 ("Pay once and join Crumb School"), a "Questions, answered" FAQ and a "Join the course" button.
The sign-up form saves every response, and you see them from any device in your own panel, which you turn on by choosing a password. You also get notified of each sign-up. The page collects sign-ups and does not take payment yet: you add that later by asking in the chat.
One important note: Crumb School is an example business, and the testimonials in the demo are examples, like the course content and the $149 price. On yours, use real testimonials only: ask past buyers for a sentence and their permission, then swap the examples from the chat. A made-up testimonial can win a sale today and cost you your customers' trust tomorrow. Before you share the link, open it on your phone and try it end to end, form included.
04. What a sales page like this costs
Build cost: 1.5 credits, plus 0.7 for one adjustment (setting the sample price at $149): 2.2 credits in total, or $0.22 (10 credits equal $1). That fits inside one day of wanno's free credit ($0.30), which comes with a monthly cap of $1.50. You pay only if you want to remove the badge, use your own domain (here is how to connect one from your phone), or ask for more changes than the free credit covers. The Starter plan is $4.99 a month with $10 in credits included (see plans).
For an honest comparison: $0.22 is paid once. The cheapest paid plan among the other options, Carrd Pro Lite ($9 a year), works out to about $0.02 a day, every day; Systeme.io Startup to about $0.57 a day; Unbounce billed annually to about $0.73; Leadpages to about $0.97. If you move to Starter to use your own domain, wanno is about $0.17 a day.
How to choose: for a simple page at the lowest yearly cost, Carrd; for a full funnel with a course and emails, Systeme.io; for a form and panel with nothing to configure, describe the page to AI.
If your offer includes products with photos, see how to build a digital catalog. And to see how that notification works, here is a contact form that tells you right away.
Your sales page, ready before your next launch
A good sales page is a promise, proof, an offer, answers and one clear button, in that order. Describe yours in wanno and see the result on your phone; trying it is free.
Frequently asked questions
What should a sales page include? Five pieces: a clear promise, real proof, an offer with the price, answers to common doubts, and a repeated call to action.
Can I build a sales page for free? Yes. Carrd and Systeme.io have a free account or plan, and wanno's free plan gives daily credits (with a monthly cap of $1.50): the page in this guide cost $0.22.
Does the page charge for the course? No: it collects sign-ups with its form. You add payment later by asking in the chat.
How do I see who signed up? In your own panel, from any device, after choosing your password.
Read also: How much does it cost to build an app
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