Reminds me of conversations about DVD-Audio discs and SACDs from a decade ago. The Blu-Ray format seems to me to be an enhanced DVD-Audio format, but mainly only in that a display isn't needed to make the Blu-Ray discs usable. Good decision on that. DVD-Audio was capable of 192/24 quality, but not all discs used that capability because of the source material available.
The pricing is too high on the Blu-Ray discs, in my opinion, for what is provided. Hopefully they'll come down to below $20 a piece once production is up. I'm interested in a couple titles available now that I don't remember being on DVD-Audio before and may pick those up soon anyway. If the discs can be produced on any standard Blu-Ray production line, that should help with costs. The SACD format suffers now and has for years because of limited production capacity.
I would recommend paying attention to reviews of the Blu-Ray discs though, because some of the high-resolution releases from the early DVD-Audio and SACD days weren't much better than standard CD in sound quality.