Sell coding courses

Sell your coding course from your own storefront.

You already know the stack you use every day, and someone out there is stuck on it tonight. Package the code and the lessons, set a price, and buyers get the files by email after they pay.

Start selling free See what it costs

route.tsverify.ts

1// lesson 07: webhooks you can trust2export async function POST(req: Request) {3  const body = await req.text();4  const sig = req.headers.get("signature");5  if (!verify(body, sig)) {6    return fail(400, "bad signature");7  }8  await markPaid(JSON.parse(body).orderId);9  return Response.json({ ok: true });10}1112type Sig = string | null;13function verify(body: string, sig: Sig) {14  if (!sig) return false;15  return timingSafeEqual(sig, sign(body));16}

TypeScriptLesson 7 of 24

yourname

Payments in Next.js, the boring way

Starter repo + 24 lesson notes

€79

Pay by card · files arrive by email

An example product, not a real store

AOVANCY so far

€90,000+sold through AOVANCY
1,800+sales
1,650+buyers
Mar 2026selling since

Totals across all AOVANCY storefronts, checked on 3 October 2026.

What sells

What developers pay for.

Framework deep dives
One stack, done properly. The more specific the stack, the fewer people teach it well.
Build-along projects
One real project from empty folder to deployed. People learn more from that than from theory.
Narrow tutorials
Scaling Postgres, auth done right, background jobs. Solve one problem people search for.
Starter kits
Auth, payments and the boring setup already wired. Developers happily pay to skip a week of it.
Cheat sheets and references
The notes you have open while you work, cleaned up. Cheap, useful, easy to buy.
Kits with lessons
The starter repo plus the notes explaining every decision in it, at one price.

Delivery

The repo and the notes, in one download.

Zip the starter code, the lesson notes and any short clips into one file up to 50 MB. PDF, Markdown, text and video files upload on their own too.

After checkout the buyer gets an email with a private link to the download, and the link keeps working. Full video courses with a lesson player: Coming soon.

What the buyer downloads

payments-in-next.zip
22 MB
- starter/app/api/webhook/route.ts3 KB
- starter/README.md6 KB
- lessons/07-webhooks.pdf1.4 MB
- lessons/07-webhooks.mp412 MB

Your permanent link to this purchase. Bookmark it.

An example, not a real product

What it costs

A €79 kit, and what we pay you.

Developers compare the price with the hours it saves them, not with a book. A starter kit that removes a week of setup is an easy €79 for anyone billing by the day.

The free plan has no monthly bill and holds 3 products. Every order is sold by AOVANCY SRL: we take the payment, deliver the file and handle refunds, then pay you 92.5% of the price.* We keep 7.5%, and card processing comes out of the sale first.

*Before card processing.

Starter kit with notes€79.00
Monthly fee€0.00
AOVANCY keeps 7.5%−€5.93
Card processingVaries by card

We pay you*€73.07

An example sale

The product page

Name the stack and the finish line.

Developers skim for versions and scope. Put both in the first line, and say what they’ll have running when they’re done.

Product description

Next.js 16, Postgres and card payments, wired up and explained. By lesson 24 you have checkout, webhooks and refunds working in your own app.

A line to steal and rewrite

FAQ

Questions people ask.

Short ones, as files: MP4 or MOV, or several in a ZIP, up to 50 MB per product. Long video courses don't fit that, and a hosted course player is coming soon. Until then most educators here sell the code, the written lessons and short clips.

Zip the starter repo and upload it. If you'd rather give access to a private repository, say so in a README in the zip and invite each buyer yourself. Your Orders page shows every buyer's email.

Yes, if yours is specific. Free videos are great for getting started; people pay for a complete, tested path through one stack with the code already working.

Cheat sheets and references often sit around €9 to €29, starter kits around €49 to €149, and kits with full written lessons can go higher. You can change prices whenever you like.

No. AOVANCY is your storefront, checkout and delivery; the buyers come from your GitHub or your newsletter. Your store has its own address (yourname.aovancy.com), so it's one link to share.

Keep reading

Start here

Sell the kit you wish you'd had.

Pick a name first. It becomes your store's address, and the first kit goes up after that.

1// lesson 07: webhooks you can trust2export async function POST(req: Request) {3 const body = await req.text();4 const sig = req.headers.get("signature");5 if (!verify(body, sig)) {6 return fail(400, "bad signature");7 }8 await markPaid(JSON.parse(body).orderId);9 return Response.json({ ok: true });10}1112type Sig = string | null;13function verify(body: string, sig: Sig) {14 if (!sig) return false;15 return timingSafeEqual(sig, sign(body));16}

The repo and the notes, in one download.

Zip the starter code, the lesson notes and any short clips into one file up to 50 MB. PDF, Markdown, text and video files upload on their own too.

After checkout the buyer gets an email with a private link to the download, and the link keeps working. Full video courses with a lesson player: Coming soon.

A €79 kit, and what we pay you.

Developers compare the price with the hours it saves them, not with a book. A starter kit that removes a week of setup is an easy €79 for anyone billing by the day.

*Before card processing.

Sell the kit you wish you'd had.

Pick a name first. It becomes your store's address, and the first kit goes up after that.

What developers pay for.

Framework deep dives

Build-along projects

Narrow tutorials

Starter kits

Cheat sheets and references

Kits with lessons

The repo and the notes, in one download.

A €79 kit, and what we pay you.

Name the stack and the finish line.

Questions people ask.

01Can I sell video lessons?

02How do I deliver the code?

03Is it still worth selling when there's so much free content?

04What should I charge?

05Will AOVANCY send me buyers?

Keep reading

Sell the kit you wish you'd had.

What developers pay for.

Framework deep dives

Build-along projects

Narrow tutorials

Starter kits

Cheat sheets and references

Kits with lessons

The repo and the notes, in one download.

A €79 kit, and what we pay you.

Name the stack and the finish line.

Questions people ask.

01Can I sell video lessons?

02How do I deliver the code?

03Is it still worth selling when there's so much free content?

04What should I charge?

05Will AOVANCY send me buyers?

Keep reading

Sell the kit you wish you'd had.