said by skeechan:It comes from the lack of volume. They aren't producing enough to get the price down. Unfortunately there isn't the demand to support them producing enough to get the price down. The market just isn't that big.
Thunderbolt will need to make a serious break into the PC market for this to happen.
I have a WD 6Tb Thunderbolt drive (I think it's a couple of drives, really) and it's pretty sweet, even though it was expensive (plus the $50 cable...) Beats the crap out of the USB 2.0 drive I had to do the same work before (I have a 2011 iMac, so it only has USB 2.0).