My spouse works at an artisanal chocolate factory in Raleigh, NC[0]. From experience, there is a huge difference in quality between small batch chocolate bars and bonbons vs mass manufactured. Even with small batch, there's a difference between buying it in a store vs buying it fresh from the factory.
That said, I don't think that difference is worth an extra $290. Once you're over the $5-to-10 per bar mark, there's diminishing returns on quality (for me at least.) Anything over that and you're paying for the story and branding. A $7 single-origin fair trade bar tastes the same as a $300 one, and in both cases, they're probably sourcing from the same farmer.
That said, I don't think that difference is worth an extra $290. Once you're over the $5-to-10 per bar mark, there's diminishing returns on quality (for me at least.) Anything over that and you're paying for the story and branding. A $7 single-origin fair trade bar tastes the same as a $300 one, and in both cases, they're probably sourcing from the same farmer.
[0] https://viderichocolatefactory.com/