The Honest Reality
This is the highest-margin AI side hustle on this list — every sale after the first is nearly pure profit. It's also the most flooded market. Reality check:
This is a great side hustle if you have specific expertise (a job, a hobby, a methodology) you can package — and you're willing to treat your product like a real product, not a quick listing.
Who This Fits
What You Will Build
One of three product types, with full documentation and a working storefront:
By the end of this guide, you'll have one product live, priced, listed, and ready for its first sale.
What You Need
Total month-1 budget: $20–30
Time: 10–20 hours upfront for product creation; 3–5 hours/week ongoing for promotion
Real-World Inspiration — 3 Sample Stores
Three example digital product creators across the three product types. (HappyDownloads is real and linked; the other names are illustrative — use them all as templates, not literal targets.)
| Shop Name | Product & Description | Est. Monthly Revenue | Store Link |
|---|---|---|---|
| MarketingSkillsHub | Agent Skills for marketing teams using Claude Code and ChatGPT Codex — SEO audits, ad copy generation, competitor analysis, content brief writers. Each skill packaged as a SKILL.md file with included templates. ~12 skills at €5–15 each. | $750 / mo | agensi.io/m/marketingskillshub |
| PromptVaultPro | Prompt packs for B2B marketers — bundles of 80+ tested prompts each, organized by funnel stage (awareness, consideration, conversion). Sold on Gumroad. ~6 packs at $29–49 each. | $1,200 / mo | promptvaultpro.gumroad.com |
| HappyDownloads | Digital planners and templates for iPad and tablet apps (Goodnotes, Notability, Notion-style organizational systems) — academic planners, lifestyle planners, digital stickers, fonts. Run by a single creator (Rina) on Etsy and direct site. Hundreds of products spanning aesthetic categories. | $3,000+ / mo (estimated, multi-year shop) | happydownloads.net · etsy.com/shop/HappyDownloads |
What these three have in common despite very different products:
Step 1 Pick Your Product Type
Three product types, three different fits. Pick one for your first launch — don't try to ship all three.
| Product Type | Best For | Time to Build | Typical Price | Where to Sell |
|---|---|---|---|---|
| Agent Skill | Anyone with a specialist workflow that benefits from being run as a one-command agent (security audits, niche analysis, code review templates, etc.) | 5–15 hours | €5–15 (most), up to €50 for premium | Agensi, Agent37, your own site |
| Prompt Pack | Anyone with a job or hobby that benefits from many AI prompts (marketing, sales, writing, education, parenting, etc.) | 5–15 hours | $9–49 | Gumroad, Etsy |
| Notion Template | Anyone with a workflow they've refined in Notion (project tracking, finances, CRM, content calendar, etc.) | 15–40 hours | $19–79 | Gumroad, Etsy, Notion Marketplace |
Step 2 Pick a Niche With a Specific Buyer
The biggest mistake new sellers make: building "AI prompts for marketers" or "Notion template for everyone". Generic products get buried.
Run this prompt in ChatGPT or Claude:
I want to create and sell a digital AI product. Help me pick
a specific niche with proven buying demand.About me:
My day job / professional background: [be specific]
My hobbies or side interests where I'm above average: [list]
Communities I'm part of or understand well: [list — e.g.
Reddit subs, Discord servers, professional groups]
Hours per week I can commit: [realistic number] Suggest 3 specific niches that:
1. Have a clearly identifiable buyer with money to spend
2. Are narrow enough that I can be the obvious choice
3. Have proven demand (visible products selling on Agensi,
Gumroad, or Etsy)
4. Match my real expertise so I can ship a quality product
For each niche, give me:
The specific buyer in 1 sentence (job + pain point)
5 example products that would sell
Rough price range buyers expect
The biggest risk or saturation issue
Where this buyer already shops
Step 3 Build the Product
The build step looks different for each product type. Here's a real workflow for each.
Agent Skill workflow:
1. Identify a workflow you do repeatedly that has a clear, specialist payoff (e.g. "review this contract for red flags", "audit this AWS config for cost issues", "rewrite this PR description in our team's format")
2. Build it first as a Claude Skill or ChatGPT Custom GPT for yourself
3. Test against 20+ real inputs and refine the system prompt until it's reliable
4. Package as a SKILL.md file (the open standard format Anthropic and OpenAI both support since late 2025)
5. Add example invocations, expected outputs, and edge-case handling
6. Submit to Agensi — automated security scan runs; once approved, it's live with Stripe payments and 80% revenue share
Prompt Pack workflow:
1. List 30–80 distinct use cases a buyer in your niche faces (not 80 prompts — 80 problems you'll solve)
2. Write or generate the best prompt for each, test each one yourself in ChatGPT or Claude
3. For each prompt: write a 2-sentence "When to use this" + the prompt + 1 example output
4. Group into 4–6 categories (e.g. for B2B marketers: Awareness / Lead Gen / Email / Customer Success / Reporting / Internal)
5. Format as a Notion page (best for browsing) or PDF (better for download/print)
6. Add a "How to Use This Pack" intro page with usage examples
Notion Template workflow:
1. Build a working version for yourself first. If you wouldn't use it daily, no buyer will.
2. Refine it for 2–4 weeks of real use. Keep notes on what's annoying.
3. Strip out your personal data; replace with realistic dummy data
4. Add a "Getting Started" page with screenshots and step-by-step setup instructions
5. Record a 5-minute Loom walkthrough — buyers want to see it working before purchase
6. Duplicate the template into a fresh workspace and test the full setup flow as if you're a new user
Step 4 Set Up Your Storefront
Each product type has a best-fit storefront:
| Platform | Best For | Pros | Cons |
|---|---|---|---|
| Agensi | Agent Skills | 80% revenue share via Stripe, automated security scan, built-in distribution to AI tool users | Newer marketplace, smaller audience than Gumroad |
| Gumroad | Prompt Packs and Notion Templates | Drop-dead simple setup, ~10% per sale, includes file delivery and license keys | Limited customization, less SEO power than Etsy |
| Lemon Squeezy | Sellers who want lower fees + global VAT handled | ~5% per sale, handles tax/VAT for global buyers, more pro-feeling | Slightly more setup; less browseable than Gumroad |
| Etsy | Notion templates and printable products in lifestyle niches | Built-in buyer traffic, strong search SEO for organizational templates | Higher fee structure (~13%+ all in), AI disclosure required |
For your first product, default to the platform that fits your product type best (Agensi for Skills, Gumroad for Prompt Packs, Etsy or Gumroad for Notion templates). Multi-listing comes later.
Step 5 Pricing — Three Frameworks
Three pricing strategies, depending on your product and confidence:
For your first product, default to Loss leader for the first 30 days. Once you have 5+ positive reviews, raise the price to Standard. Some products earn the right to Premium pricing over time; most stay at Standard.
Step 6 Launch and Promote (the First 30 Days)
Without an audience, your launch sequence depends on platform SEO + niche community presence + honest "I made this" announcements. Realistic 30-day plan:
Step 7 The First 30 Days — What to Ship, Track, Ignore
Ship:
Track:
Ignore:
Going Further
Build a product family. After product #1 has 10+ sales, build product #2 in the same niche. Bundle them together. Each new product compounds the others — and existing buyers are your easiest sales.
Capture emails from buyers. Every Gumroad / Lemon Squeezy / Agensi sale gives you the buyer's email. Build a simple newsletter (Substack, ConvertKit) with monthly updates and new launches. After 100 buyers, this list is the difference between $200/mo and $2,000/mo.
Open-source a "lite" version. Release a free, smaller version of your product (3 prompts instead of 80, a single free Skill, a stripped-down Notion template). Free version → buyers discover you → paid version converts.
Key Takeaways
Here's what you learned in this guide:
First sale typically comes within 1–3 weeks. First $500/mo: 2–4 months. First $2,000/mo (if it ever comes): 12+ months and 5–10 well-tuned products. Slower than you'd hope, faster than physical products, and the work compounds.