Real-revenue cases
A licensed child therapist turned her clinical know-how into a workbook and physical coping-skill card decks, sold through her own site, reporting roughly $10K/month in gross sales.
01
She filled a concrete gap: no single book collected a broad set of coping skills. Self-publishing validated demand first, then a publisher in her field picked it up, meaning an institution paid for the same content. The physical cards were built only after existing customers asked for them.
Parents, teachers and therapists buy her workbook and card decks directly; the book also sells through a publisher, while the cards sell per-unit on her own store, with an email list driving repeat purchases and promos.
Scattered, unstructured coping-skill material and parents piecing together techniques on their own.
02
The source does not name the first customers; it only mentions free downloads to build an email list and the audience/connections from her earlier site, Encourage Play.
03
The free-resource-for-email plus automated-sequence funnel, and the digital-first-then-physical sequencing, transfer directly to AI tools: pull signups with a free template or mini-tool, pitch the paid tier inside the email sequence, and validate digitally before building anything heavier.
04
Revenue basis · Founder self-reported, unaudited (see source page)
The page header says $20K/month while the founder's own text says about $10K/month; the two conflict and neither can be confirmed.
No customer counts, repeat-purchase rate, refund rate, or revenue split by product line, so revenue stability is unknown.
No CAC, ad ROI, or email list size, so channel effectiveness cannot be quantified.