They are likely 200USD+ per TB, so one 250TB drive would be ~50,000USD.

There’s probably bulk pricing, but if you bought 40 drives separately thats 2,000,000USD in storage alone.

It's actually now at least 400 per tb.

The 64's are 25k, up from 6k a year ago. I have to imagine the 128's or 256's are at least 500/tb