If you read closely....
"Front caliper is a 6 piston monobloc machined from a single piece forging. Rear caliper is a 4 piston monobloc which combined offers a more positive, responsive pedal as a result of improved caliper and system stiffness."
Its a kit with forged monoblock front and rear calipers, that's why its so expensive. They do make monoblock calipers that are cast and machined as I had on my B6 S4 Audi. Any kit with real monoblock forged calipers is going to cost a lot, be it AP. Brembo, or Stpotech. But as OP said, lets keep this what he offers and Its AP products. If I decide to go Alcon I'll find a vendor someplace else.
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