$180 for a set of cross-drilled rotors and ceramic pads is a bargain. But the question is - will it work (stop your car when you need it most) and for how long?
A complete set of OEM rotors and pads from Joe of IoS,
http://www.infinitipartsusa.com. (one of our sponsors) will cost you $400+. Breakdown as follows-Front pads, $61.33 (set)-Rear pads, $58.66 (set)-Front rotors, $82.11 (each)-Rear rotor, $69.89 (each)
But why replace all the rotors and pads. Most of the rotor warpage are on the front which maybe corrected by turning (< $20 per rotor). Have the rotors turned and buy new pads. Just make sure you torque the lug nuts to 80 ft-lbs (spec 72-87 ft-lbs). Over-torquing may warp the rotors. You might as well clean the lug nuts and hub bolts with steel brush to prevent stripping.
Brake Spec:-Front rotor: 22 mm new/20 mm minimum-Rear rotor: 9 mm new/8 mm minimum-Front pads: 11 mm/2 mm minimum-Rear pads: 10 mm new/2mm minimum