No that's ok, you can do sales
But I wont be buying any $250 drives soon. If this solution doesn't work because of dropping these drive and doing 7hr rebuilds all the time, I'll probably go with a BD backup system, possibly mirroring. I lost a 500 and a 750g drive last hear, hence the new method of avoiding restores. It's just a convenience of having all that data available all the time, no business need here.
What is different about the RE drives that makes them better for raid?