Just a heads up - I just bought and fitted a new set of aftermarket brakes to my car - they're REALLY frigging expensive here, but I bought a set of 4 cross-drilled and slotted discs and pads for $165USD including shipping within the US. Shipping into Australia using my importer was less than $100.
It's so cheap that it's worth while just replacing everything when your pads are worn.
Great brakes, and cheap too!