Since 1 TB harddrives nowadays cost about 80 to 100 euros (so at most 140 dollars or so) depending on the brand and type I'm wondering about the pricetag of 30 to 50 dollars per GB that you are calculating ? Storage nowadays is in my opinion only a very small portion of the total cost in the IT - no ? It is the management that should be
deminished since they mostly are overpayed and sometimes even uncapable of understanding their own decisions !