I will make this real simple. Kirin is way better than your average dimsum and costs more than your average dimsum. Sounds logical to me.
I've had the pleasure of eating at Kirin twice. Both times delicious. I use har gow and sui mai to judge quality, because if the staples of dim sum are good - the place is about to bang out consistently yummy dishes.
Note their turnip pancake is a let down, not crispy on the outside but everything else was delicious. Like, everything. You know what makes this story a fairy tale? Someone else picked up the tab on both occasions. Dimsum happily ever after.