It's 24.99 per bulb, so 100 bucks for all four. I just put mine in this evening and must say that I am quite impressed with them, especially on hi. They are soo much better than the stock things that pass for light's.
As for comparing them to the PIAA's, not sure. I haven't seen the PIAA's other than in brochure's. Maybe someone else can answer that question.
Mike
