Real demand
It solves a real annoyance: Lego builds fall apart, but normal glue is permanent. A water-soluble, re-openable adhesive gets repeat purchases, and the founder claims $35K+ monthly sales after Shark Tank.
Real-revenue cases
How This 13 Year Old Made It On Shark Tank And Did $500K In Sales -
Real demandA 13-year-old and his dad built a water-releasable adhesive for Lego-style bricks, sold it on Amazon, and rode a Shark Tank appearance to roughly $500K in 2019 sales.
- Startup cost
- $1,000
- Primary source
- View original
01
Real-demand verdict
Consumers buy single units at roughly $5 each through Amazon FBA and Shopify, with a Kickstarter campaign as the early funding channel.
Replaces super glue and tape, which either bond permanently or barely hold.
02
Where the first customers came from
The source does not name a specific cold-start channel; it only says Amazon listings started selling two to five units a day, building to nearly $50K.
03
Tactics you can copy
- 01File a provisional patent before selling publicly so the formula can't be copied.
- 02Trade services for design: the dad built a photographer's invention in exchange for free branding work.
- 03Enter local pitch competitions to win cash and free legal/IT services early on.
Moving it to an AI business
Not an AI business itself, but the 'provisional patent before launch' and 'trade services for early resources' moves transfer directly to small AI tool teams whose prompts or workflows are easy to copy.
04
Evidence and limits
Founder interview, self-reported
Revenue basis · Founder self-reported, unaudited (see source page)
What evidence is missing
All revenue figures are founder self-reported and unaudited; the page shows both $167K/mo and $35K/mo, which cannot be reconciled.
No data on whether post-Shark Tank growth held, nor any churn or repeat-purchase numbers.
First-customer source, Kickstarter amount, and conversion path are all missing.