For all left handed shooters, it is extremely worth it.
I've heard a lot of good reviews for the Radian Raptor. As a left handed shooter, I decided I would go all out on making my DDM4v7 fully functional as a left handed rifle.
I did NOT expect this charging handle to be as smooth or easy to pull as it is. After years in the marines using beat up rifles, I didn't think a new charging handle was a worthwhile upgrade. I was very wrong.
If you're on the fence about buying one because you think it isn't worth the money, it absolutely is. The only regret I have is not buying two for both of my ARs.