Price of NAND is going up everywhere which in turn would make the 830 series more than the current 840 series.
Why would you want that?
840 series is faster bar perhaps the poor write speeds you get on the 120gb in comparison to the 830.
What i am saying is when you could get the 830 @ £120 i would rather buy that than the Toshiba drive which is more money then again i can get the samsung 840 for £119 but slower write speeds which i dont want.