The original price of the
Voigtlander Bessaflex in 2003 was $300. Adjusted for inflation that's about $410, but they sell
new for $650. It's not one of the highly sought after SLRs because it's kind of cheap feeling, but they're pretty rare.
More along the lines of a well-built camera is the
Nikon F3. There are a lot more of these, and you can get one that's new in box for about $800. The
Nikon FM3A is more recent, less common, and has a more sophisticated shutter, and those go for $1000. Its
original price was $820 in 2001, or about $1170 in today's dollars. The
Olympus OM-4 goes for about $900 NIB.
So the question is can Cosina or some other company make a high quality SLR for about $1000 and still make a profit? I'm thinking it is. I bet amateurs would even pay up to $1500–$2000 for it as an "investment."