Real-revenue cases
Two founders built a stair-climbing folding cart, got initial traction from a viral Facebook video, and reached roughly $583K in monthly revenue by 2018 while landing shelf space at Costco, Home Depot and other big-box retailers.
01
It replaces the ordinary hand truck and the manual labor of hauling heavy items up and down stairs, a real and recurring pain point; with a patent and lifetime warranty, revenue grew from $385K in 2015 to a projected $7M+ in 2018, showing repeat paying demand.
Customers and retail chains buy a physical cart, sold through the company's own Shopify store and via retailers like Costco, Bed Bath & Beyond, Home Depot and Lowe's.
Standard hand trucks and manually carrying heavy items up and down stairs.
02
The founder shot a product video on a MacBook, posted it to Facebook and boosted it at $20/day; it went viral with 7.5M views and drove the first orders.
03
Not an AI business itself, but the cold-start playbook of testing a short real-use-case video with a tiny ad budget and letting organic reach do the work transfers directly to AI apps: film a 15-second demo of the specific task the product solves, test at $20/day, then decide whether to scale spend.
04
Revenue basis · Founder self-reported, unaudited (see source page)
The $583K monthly revenue is a founder self-report on the Starter Story page, unaudited, and doesn't fully reconcile with the stated projection of $7M+ in 2018 annual sales.
The material doesn't explain how customer acquisition continued after the viral Facebook video, nor how the retail channel deals were negotiated and executed.
No basis is given for the 40% gross margin, and return/logistics costs are not covered.