This is an interesting concept. I'm not willing to spend this kind of money for what appear to be totally generic earphones. But, if Normal starts selling custom fit kits that could be used with other earphones, I would be very interested in that!
RDaneelI got a pair a while back and it fit pretty good however you're right, they didn't sound that much better than your generic $25 earphones. I had to return them for that and the part that goes in the ear was kinda scraping the inside, I might not have been the best fit.