How a Solo Founder Built a SaaS by Selling to Subscription Boxes

**Lucas** (0:01)
So, you've probably heard the standard advice for first time SaaS founders. Build something you'd use yourself, solve your own pain, start with a problem you know well.

**Luna** (0:11)
Right, the classic dogfooding approach. It's how most of the founders we've talked to got started.

**Lucas** (0:17)
Exactly. But today's episode is about a founder who did the opposite. He didn't build for himself.
He built for a very specific type of customer he had never been, a subscription box company.

**Luna** (0:31)
Subscription boxes.
That's a crowded space.
Birchbox, FabFitFun, all those monthly curated goodies. What's the SaaS angle?

**Lucas** (0:41)
The founder is a guy named Marcus Chin. He'd spent a few years as a freelance developer, mostly building e-commerce sites for small retailers. Around 2023, he noticed a pattern. Clients who ran subscription boxes kept complaining about the same thing.
Managing churn and inventory together was a nightmare.

**Luna** (1:02)
I can imagine. You need to know how many boxes to pack, based on who's still subscribed, and you need to do it fast before the billing cycle hits.

**Lucas** (1:11)
Exactly. Most subscription box companies were using a patchwork.
Shopify for the store, Stripe for billing, a separate inventory tool, and a spreadsheet to reconcile everything. Marcus saw that and thought, I can build one tool that does all of that specifically for subscription boxes. Not for e-commerce in general, not for SaaS subscriptions, just for physical boxes.

**Luna** (1:35)
So he went hyperniche from day one. What did he call it?

**Lucas** (1:39)
He called it box flow. And here's the thing, Marcus didn't just guess at the features. He spent two months talking to subscription box operators. He'd email founders, ask for 15 minutes of their time, and just listen. He found that the biggest pain wasn't billing or even churn management.
It was what he called inventory bleed.

**Luna** (2:01)
Inventory bleed. I love that term. What does it mean?

**Lucas** (2:05)
When a customer cancels mid-cycle, you've already allocated product for their box.
If you can't reassign that box to a new customer or a different shipment, you're essentially throwing away that inventory. Marcus built box flow to handle that in real time. When a cancellation comes in, the system automatically reassigns the allocated items to the next shipment or a waitlist customer.

**Luna** (2:29)
That's clever. But how did he get his first customers without a sales team? That's the part that surprises me.

**Lucas** (2:36)
He started in a very old school way. He went to a trade show, the Subscription Summit in Las Vegas, March 2024
He didn't have a booth. He just walked the floor, talked to exhibitors, and asked about their biggest operational headaches. He'd say, I'm building something that might help with that. Can I show you a demo? He got five beta testers that weekend.

**Luna** (3:01)
Trade shows. That's actually a smart move when you're targeting a very specific vertical. Everyone in that room has the same business model.

**Lucas** (3:10)
Right. And Marcus didn't try to sell a finished product. He told them, use it for free for three months, and I'll build the features you need.
In exchange, he asked for feedback and a testimonial if they liked it. By the end of the beta, all five were paying customers, and he had a list of features that were validated by real users.

**Luna** (3:32)
That's a classic customer development loop.
Build, measure, learn. But did he charge from the start after beta?

**Lucas** (3:40)
He did. He launched with a pricing model tied to the number of active subscribers.
$50 a month for up to 500 subscribers, $150 for up to 2,000, and then custom enterprise pricing. That kept it affordable for small boxes, but scaled with their growth.

**Luna** (3:58)
So his pricing aligned with his customer success. If they grow, he grows. That's smart.

**Lucas** (4:06)
Exactly. By mid-2025, Boxflow had 43 paying customers.
Not a huge number, but Marcus is a solo founder, no employees, no outside funding. He's profitable on about $8,000 a month in recurring revenue, and his churn rate among those customers is under 5%.

**Luna** (4:28)
That's impressive. But I'm curious, why didn't a bigger player like Recharge or Cratejoy just add this feature? They already serve subscription boxes.

**Lucas** (4:38)
Great question. Marcus told me that when he talked to potential customers, many had tried Recharge or Cratejoy.
But those platforms are general purpose subscription tools. They're built for digital subscriptions, SaaS and physical boxes all mixed together. The inventory bleed problem is very specific to physical boxes with perishable or seasonal goods. The big platforms didn't prioritize it because it only affects a subset of their users.

**Luna** (5:06)