Cost for cheap SAN storage where I work is £3,000 per TB ($4,500 USD) and £10,000 per TB ($16,000 USD) for the 5 year TCO. As you can imagine every request is heavily scrutinised, tape backups have to be justified etc.

If we had SSD's it would be £50,000 per TB. This is in a EMC SAN array. All production disks are mirrored locally and remotely to the other data centre. So if you ask for 1TB in production storage needs to supply 4TB. So the price jumps to £40,000 per TB.

How many time have I heard but I can go to the local PC shop and buy a TB for £100.