Real-revenue cases
Former product design consultant Mike Scully runs Lever Gear from South Carolina, selling a credit-card-sized 40-in-1 multi-tool through its own site and Amazon, with paid laser-etched personalization on top; self-reported revenue of $42K a month.
01
It replaces the habit of carrying a bulky multitool or a pile of loose small tools — one card slips into the wallet. Over 25,000 units sold across 80+ countries, plus follow-up products, point to sustained demand rather than one-off hype.
One-off hardware sales: consumers buy the toolcard on the brand's own site and Amazon, new products are pre-sold on Kickstarter/Indiegogo to cover tooling and the first production run, and laser-etched personalization adds an upsell.
A wallet-sized card replaces the bulky multitool and assorted pocket tools people used to carry.
02
Kickstarter backers: the Spring 2016 campaign raised just over $100k, warmed up beforehand through Facebook and social media.
03
Not an AI business itself, but two moves transfer directly: validate willingness to pay with a pre-sale or waitlist before building, and treat custom, on-demand AI output the way Lever Gear treats laser etching — a paid add-on beyond the standard product.
04
Revenue basis · Founder self-reported, unaudited (see source page)
The $42K/month revenue is founder self-reported and unaudited.
The $29 average price, 40% gross margin and $23.8K starting cost on the page look like Starter Story category averages, not Lever Gear's own figures.
No breakdown of revenue by channel (own site vs. Amazon vs. personalization), no repeat-purchase rate, no profitability data.