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Real-revenue cases

How Marc Debnam Started A Successful Underwear Brand

Real demand

An Australian husband-and-wife underwear brand that prints artist collaborations on cotton underwear, selling online and through 100+ stockists, mostly to women aged 35-55 buying gifts, at $40K-$200K monthly revenue.

Founder interview, self-reported Facebook 广告Google 购物与展示线下市集100+ 家零售门店
Startup cost
$13,700
Primary source
View original

01

Real-demand verdict

Real-demand verdict

Real demand

It reframed underwear from a personal staple into a gift, with women buying for the men in their lives and peaks at Valentine's and Christmas, so demand recurs around gifting occasions. The founder reports ~10% annual growth, implying repeat purchase.

How it makes money

Direct-to-consumer sales on Stonemen.com plus wholesale to 100+ stores; roughly 70% gross margin online and 40% wholesale.

What old behavior it replaces

Plain printed-less underwear, and generic male gifts like ties or socks at holidays.

02

Where the first customers came from

Early online sales were one or two a week; the founder found his real buyer — women aged 35-55 — by selling at markets.

Acquisition channels Facebook 广告Google 购物与展示线下市集100+ 家零售门店

03

Tactics you can copy

  1. 01Validate the real buyer at markets first, then split ad spend by persona: target women before Christmas, shift to male self-buyers in Jan-Feb.
  2. 02Reposition the product as a holiday gift and time campaigns around Valentine's and Christmas instead of selling it as a daily staple.
  3. 03Launch new designs monthly to keep the brand fresh and generate a steady stream of ad creative.
Moving it to an AI business

For AI businesses: the 'find the actual payer, then allocate budget by occasion' play transfers directly — in many AI tools the buyer isn't the user (e.g. a manager buying for the team), so validate who pays and when before spending on ads.

04

Evidence and limits

Self-reported numbers are unaudited — treat them as leads, not facts
Founder interview, self-reported

Revenue basis · Founder self-reported, unaudited (see source page)

What evidence is missing

The $40K-$200K monthly revenue, ~10% annual growth, and 70%/40% margins are founder self-reported and unaudited.
The page shows both 'Stonekin' and 'Stonemen'; it's unclear which entity the revenue figures belong to.
Key unit economics — CAC, repeat purchase rate, return rate — are missing.