We now offer the Langka product in the automotive aftermarket/mass merchant markets. I used it, liked it, and made a deal with them to distribute it as our "California Gold® Paint Chip Repair" kit, part # 08540.
Granted, it does have a learning curve, but it's the only way I've found for a consumer to do good touch-ups without fear of screwing the paint up, like you possibly could wet-sanding.
I've seen retail price points of $11-15, so it's more affordable than an internet purchase (with shipping charges), and let's face it, not everyone is willing to purchase over the internet.