Neil,
Hows about you start by inventing me a nice big fighter - then you'll only be $999,500 away from making a million bucks (give or take).
Just think, every new one you make will bring you a new "royalty" check for your design. 'Course, you might have to do a little work...
On a more serious note, I'd imagine it would take quite a bit to reach the 7-figure level. Take Darrel Ralph's neck-knife design - the ArcLite. The design is currently being produced by Camillus and retails for $27.99. If Mr. Ralph receives, say $0.25 per knife sold (this is a random, wild guess - I really haven't the slightest idea what sort of an arrangement they have), Camillus would have to sell quite a few of these before Darrell starting getting any meaningful royalty checks.
That said, why would Camillus even do something like this? The ArcLite is not very innovative or revolutionary - it's just a plain old necker. Heck, it doesn't even have a handle!
Well, for one thing, Darrell knows his stuff. He's recognized as one of the foremost designers and makers of custom knives. His designs will sell. Before the Arclite it was the EDC and probably a few others. Before that it was industry-wide name recognition achieved through word of mouth and magazine articles. Before that it was just a lot of hard work and creativity - a place many newer knifemakers find themselves today.
Now Camillus is marketing the CUDA MAXX - another Darrell Ralph design, which retails for $199.99. If he gets a dollar for every one sold, they'll only need to sell a million of 'em!
Unfortunately for Darrell, Camillus is also in bed with Rob Simonich and Jerry Fisk, but heck, I'm sure there's plenty of room for all of 'em.
