Simple answer is only 2 pbfs were purchased.
Also, yes they can be powerful in the right hands. I spent 30 mins fending off a scarab assassin and ap both of whom were quite deathful in the village.
I think if I went dark elf again I'd go Hunter though (now that is possible. I sent an email asking for a custom build based off of crossbows but never was responded too. Then last year or so they made it possible for anyone.)
Maybe I'll go buy my pbf. Still bitter I never got my RC reward 40 hours after it was awarded..