Additionally, if I recall correctly, someone mentioned in another thread that there's not a direct replacement for the Nike 48+.*
So, I think there are at least two holes with the current balls in comparison to the Nikes: Level 48 and Level 71.
Players who played those balls will pay more for comparable balls, if they can find one.
*But I didn't verify that, so I can't be sure that's correct. In fact, I just looked, and it appears to me that the new Level 48 ball is the same. But maybe I'm looking at it wrong.