They are 579/ea.
I however paid nowhere near that price. But yes they're spendy. But they perform nicely. Very pleased with the output. And the led turn signals are stupid bright.
I was expecting going from an HID retrofit with projectors to these I wouldn't be happy. But I am. Not quite as bright as the retro but the projector has its own high beam plus the inner high beams. So they are a good upgrade.