Comment by deltoidmaximus

It isn't really unbelievable. Anyone who could sub in DDR4 for their projects would do so which increased the price. And then anyone who was still using DDR4 for projects would respond to the increased price by moving to cheaper DDR3 if they could. It wouldn't take much of an unexpected demand increase to move the needle since I don't believe much DDR3 or DDR4 is even being manufactured anymore. And then you have the supply side: Increased prices of upgrades will cause many of them to be delayed or cancelled denying the refurb/used market supply of the old hardware.