A few months ago I finished building a new media server based on UnRaid. I populated it with WD 26TB drives. At the time they were about $400 (steep, but a decent capacity/dollar buy). Now they are nearly $1000 on Amazon, a 250% increase. I just hope I don't have a drive failure.
With regards to the new Micron SSD - I wonder how they keep it cool? I don't see coolant ports on it so they must strap a heatsink on.