Daniel -
Yes, the higher the price the smaller the audience. It's worth it - on occasion - to purchase one of the Bonnat Porcelana or vintaged Valrhona bars, and it's also important to remember that even at those prices, high end chocolate are still among the most affordable luxury goods on the planet. Think about, for about $20 bucks I can go into a store and get some of the best chocolate anywhere. Can't do that for any alcoholic beverage I can think of ...
My personal opinion is that most people who think about melting chocolate into bars are stuck in the single-origin mindset, which translates into one bar = one chocolate. People may not consider domestic producers like Guittard as quality producers, but they are. Now - you may not like the flavor profiles compared to others. That's a different question.
Most people when they say they don't like the flavor profiles look elsewhere. The creative melter will consider blending chocolates to achieve flavor profiles that are unique to their line. Don't like the intensity of a 55%? Add a small amount of 90%. Want to make a dark milk? Go ahead - and blend.
All but one or two of Guittard's couvertures, in bulk, cost under $5/lb. You can do the same with Barry-Callebaut, Kakao Berlin, Belcolade ... all of which are in the $3-4/lb range. Think something's too sweet or too bland? Blend (with something that has a higher cocoa content). It's easier to do this when all the chocolates come from the same manufacturer, but that's a generalization that can easily be overlooked.
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@DiscoverChoc