These are not consumer grade devices, and I can't even find an easy quote for their 30TB devices.

The price point is determined by the benefit provided over the expected lifetime of the device, so, if you have a ~150 PB data footprint you'll needn't about 1 full rack of these drives (for 12 bays per rack unit, which is a low density).

To do the same with current HDDs, you'll get, at best, 360TB per rack unit, meaning you'll need roughly 10 full racks, a 10x increase in datacenter space. So, in space alone, you'll be spending 10x more with the HDD solution. If power and speed were the same (they aren't), this would mean that paying $48,000 for a drive like this would still be a good deal.

So, I assume it'll be a long time before we see a 245TB flash drive selling for $600.