I was doing some research for the same purposes as you and found the Alcon kits were not much over the $2500 you have mentioned.
All depends on your wheel size, but Brakes Direct offered this:
• Front 6 piston monobloc Alcon kit with 365mm 2 piece rotors $2697.
They were happy to swap out pads and upgrade to PMU Club Racer pads for a little more.
Shipping is free Australia wide.
Might be worth looking at as another option.