How Agency Owners Are Building $10K/Month Product Revenue on the Side (Without Killing Their Client Work)

There's a conversation happening in a lot of agency Slack groups that nobody's posting about publicly. It goes something like this: "I just crossed $8K last month from my templates. No client calls. No revisions. Just sales."

The person saying it usually runs a six-person agency. They're not quitting. They're not pivoting. They're just running a quiet product business in the background — and it's starting to do real numbers.

I've been that person for the past fourteen months. Here's what I've learned about making it work without letting your client work fall apart.

The Mindset Shift Nobody Prepares You For

When you run an agency, your mental model is built around time. You have a certain number of hours, you sell them at a certain rate, and the ceiling is basically your available capacity. Every client engagement is a custom problem you solve fresh.

Products break that model entirely, and that's disorienting at first.

The first time I published a Notion template for client onboarding and made $340 on a Tuesday without doing anything, I felt vaguely guilty. Like I'd forgotten to do something. It took a few months before I genuinely internalized that the product I'd spent four hours building could keep earning indefinitely.

The mindset shift isn't "products are better than services." It's "products work on a different time curve." You invest time upfront, and the return comes later — sometimes much later. That's a hard thing for agency owners to accept when they're used to billing for every hour.

What to Productize First

This is where most agency owners overthink it. They imagine they need to build a course, hire a video editor, set up a membership site. That's not where you start.

Start with whatever you've already explained more than three times.

For me, it was my client discovery process. I had this two-hour workshop I ran with every new client to map out their content strategy. I'd tweaked it over thirty-something engagements. I knew every question to ask, every place clients got stuck, every insight that changed the conversation.

I turned it into a workbook. Forty-two pages, PDF format, with a Miro board template attached. Priced it at $79. It sold $2,100 in the first month.

That's the pattern. Repeatable work you've already done. Stuff you don't have to research, because you've lived it. The question isn't "what would make a good product?" It's "what have I already figured out that someone else hasn't?"

Good candidates include:

• Client onboarding processes and questionnaires
• Scope-of-work and proposal templates
• Industry-specific audit frameworks
• Reporting dashboards and templates
• Pricing calculators for your service type
• Campaign frameworks you've tested and refined

If you've been running an agency for more than two years, you have more sellable IP than you realize. The problem is it's all living in your head or buried in client folders.

Check out how to productize your agency's most repeated work — I go deep on the audit process there.

How I Structure the Time

This is the question I get most often: "I barely have time to breathe. How do I add a product business on top of everything?"

The honest answer: you don't add it. You carve out dedicated time, even if it's small, and you protect it.

I use Friday mornings, 8am to noon. Client work doesn't exist in that window. No calls, no emails, nothing. That's four hours a week. Some weeks I use it to build something new. Some weeks I use it to write an email to my list or update an existing product based on feedback.

Four hours a week is 200 hours a year. That's enough to build a real product catalog if you're focused.

The second thing that helped: separating the creative work from the operational work. Building a product is creative. Setting up your store, writing your sales page, managing downloads — that's operational. I batch the operational stuff into one monthly block so it doesn't bleed into my building time.

For the actual selling infrastructure, I use MadeThis. My agency tools are sprawling and complicated. MadeThis is the opposite — I upload a file, set a price, and get a link I can drop anywhere. No monthly coding headaches. No separate membership platform to manage. The simplicity is the point when you have limited time.

The Revenue Curve Is Slow, Then Fast

I want to be honest about timeline because a lot of the content out there makes this sound faster than it is.

Month one: $340. Month two: $890. Month three: $610 (a worse month, which happens). Month six: $2,400. Month twelve: $6,800. Month fourteen: $11,200.

It compounds. Early sales feed social proof. Social proof feeds more sales. You learn what resonates and stop making things that don't. You build a small email list of people who've already bought from you, and new products have an audience on day one.

But months one through four can feel like you're shouting into a void. That's normal. It's not a sign the model is broken.

The Part That Surprised Me Most

I expected the product business to be a financial hedge. What I didn't expect was what it did for my agency work.

When you've productized your thinking, you get sharper. I know exactly why my onboarding process works, because I had to explain it clearly enough to sell it. I know the frameworks behind my recommendations because I had to articulate them without being in the room.

My proposals got better. My client conversations got more confident. I stopped underselling because I had proof — in the form of purchases from strangers — that my methods had market value.

If you're on the fence about whether this is worth the time investment, I'd argue the product business pays dividends beyond the revenue line.

Where to Start Next Week

If you want to test this without committing to a full build, start here:

1. List the last five things you explained to a client that you've explained before.
2. Pick the one that took the most time to explain but had the clearest outcome.
3. Build the simplest possible version of that — a template, a checklist, a short guide.
4. Put it up for sale and tell ten people about it.

That's it. Don't build a course. Don't hire anyone. Don't set up a complicated funnel. Just make one thing and see if it sells.

If you want a low-friction place to host and sell it, I'd point you toward the MadeThis review I wrote — it covers the platform honestly, including what it's not great for. It's where I run my own product store, and for agency owners with limited time, the simplicity is hard to beat.

The $10K/month number is real. It took me fourteen months. But it started with one $79 workbook on a Thursday afternoon. That's the version of this story nobody tells, and I think it's the one worth telling.

Ready to build your first product? MadeThis is where I'd start — free to set up, and you can have something live in an afternoon.