after 15 seconds of googling, the P4610 U.2 format 6.4TB seems something more like a single unit street price of $2400 from non-Dell vendors. I'm mildly surprised it's that low considering that the U.2 format stuff, for serious servers, will always command a premium price.

Probably in the range of $2100 to $2200 per unit from a x86-64 component distributor in moderate quantities.