High Cost of PCI-e SSD's

Granted, the performance of PCI-e SSD's is much greater than SATA III, but the ratio of increased performance to increased cost is WAY out of balance. I am also aware that the PCI-e SSD is primarily targeting the enterprise market, but as I stated earlier, the cost is sometimes literally more than a thousand times greater than a high performance SSD A very good example of this is the Fusion iodrive octal http://www.solidstateworks.com/ioDrive-Octal.asp?gclid=CLns1-ab_LwCFYc7OgodHicA5A 10.24TB of storage at $124,000.00. And no, that isn't a typo. It really does cost over a hundred thousand dollars. This is an extreme case, but there are countless drives out there approaching 10,000.00 and more. So my question: "What makes this extreme price happen? Are they made with 24k gold?! There has to be something that drives the cost up so much!"
 
Solution
The law of diminishing returns, the fact that these are enterprise oriented devices and a lot more R&D and QA work than you could imagine that goes into these kinds of devices.