I think this is cheapest it ever been. Works out to approx. $33.25/TB at Newegg and $34.75/TB at amazon.
Also available at Newegg for $532.40 delivered if you are not in hurry and can wait for few days.
Digital storage capacity 16 TB
Hard disk interface Serial ATA
Hard disk size 16 TB
Form factor 3.5-inch
About this item
Industry's first 16TB drive
Standard Model FastFormat (512e/4Kn)
Helium sealed-drive design delivers lower total cost of ownership through lower power and weight
Digital environmental sensors to monitor internal drive conditions for optimal operation and performance
Proven enterprise-class reliability backed by a 2.5M-hr MTBF rating