John, if you're truly concerned about "those other guys" getting more for their work, then I think you may have to put more priority on your product's image -- i.e., it's perceived value. Keep in mind that perceived value can have very little correlation to real value. Take a BMW, for example. A better car than a Honda? Maybe. But is it worth twice or three times as much? Probably not. Both will get you down the road in relative comfort and safety. But there's a certain notion of style imparted to driving a BMW.
When you're prepared to put image over practicality, and sacrifice some quality for appearance, then you'll be ready to charge more for your work. Think like an artist, instead of a craftsman -- experiment, take chances, pay more attention to what catches the eye... Forget about functionality for a moment. You've already got those skills down pat.
If I were you, I'd build a $3,500 case. You've already stated that with your current methods, your work isn't worth that much (or you'd feel uncomfortable charging it). Well, what would you have to do to really make something worth $3,500? Think outside of the box. Let your imagination run wild. And then build something that you'll put a $3,500 price tag on. This experiment might take you to a whole new level.