ermmm i bought it at RM1100 DBA Longlife Gold Rotors for EK9 5 lugs, not the 4000 series!!
project miu rotor the cheapest can buy at ss racing at rm850 to 900 if i'm not mistaken
all above stated changed since 2001 to 2007, from standard engine EJ6 to B16A to B18CR, and last year i change DBA gold rotor slotted/holes!!!myself also travel a lot last time and my disc quite fast warped....everytime i skimmed my disc i will change the pads together!!!!
on current DBA rotor i've used mintex, project miu blue colour 550 deg and now ebc black stuff