Prices of NAND Flash Rose by 26% in 1H17 in China – China Flash Market
Prices of 2H17 will depend on output of 3D NAND from flash vendors

Viking Technology Claims to Ship 6Gb/s SAS 50TB SSD
"It's industry's highest capacity drive," company said

HDD Cost/GB Calculated on 75,000 Drives
Average price decreased 26% from January 2015 to January 2017

Backblaze Average Cost per Drive Size