I believe pricing (in quantity, these usually do not sell by single pieces) is around 6 cents a Gig so about $7680. I could very well be wrong though, it's been a while since I heard pricing of DC SSDs.
To be honest, that doesn't seem unreasonable. Obviously it's steep for a homelab project but I could see small-medium sized businesses buying that for on-prem needs.
It's much better than not unreasonable. If that price is accurate it's competitive with consumer drives. The big clouds would charge you 6 cents per gigabyte per quarter. Add on RAID and you still break even after four months.
the 128 also looks to be in proof of concept stage. The rest of the articles seem to be for consumer being 8/16TB SSD drives and 30TB spinning. With 64 being the the data center sizes for this set of announcements.