Never considered spending this much on a hairdryer, but I would say it is worth it for long curly hair. The time taken to dry my hair isn’t much shorter, but it feels and looks much better after as the heat and airflow is much more gentle than my old hairdryer.
The best feature is definitely the giant diffuser which is far bigger than any other I’ve seen and comfortably fits most of my hair in it. I will say the root boost attachment is too much of a direct and powerful air stream so breaks up my curls, but I didn’t buy the hairdryer for that so it doesn’t bother me too much.