I think it's a budget thing.
Remember they will last you many sets of X10s, so worth it that way.
However if you have a tendancy to lose arrows, you don't want to lose one of those.
End of the day, if you can't afford them, don't bother. I personally can't afford them so I use stainless, and I am Grand Master Level and honestly can't see them giving me the points I drop because FOC doesn't cost me points, aiming at the 9 costs me points.
My wife uses tungstuns because she's an
Easton staff shooter. She has a few extra dozen from previous purchases, and they have gone through 3 sets of X10's. Worth it for her level.