Of course 1.50 US$ a GB is ridicolous
But the whole concept of a 1U quad drive cheap-o system seems intruiging: Raid cards are still expensive. They certainly deliver in many cases the best solution. But 3TB (4 x 750) cheap ‘scratch space’ for data that can be recreated could certainly exist in a 1U box for a pretty sweet price point. Sacrificing 25% storage and you have save space.
And as long Moors Law keeps deflating disk and system prices it is still the best strategy to buy as little storage as late as possible. To paraphrase Einstein just not to late or to little.