...because they want to make a quick buck and some people are silly enough to get involved in panic buying.
There is nothing wrong with retailers charging whatever they want...customers are under no obligation to buy the item (at the inflated price).
It was a Rhetorical question

like 1.5TB of harddrive....my capacity is in the red on all 6 drives and i cant delete anything as its all important porn (cough cough) i mean work 

