I just picked mine up from having 100 000k service. Lexus of Blackburn did the job (customer of ours, so looked afer me), and a sensational job they did too! The car is so smooth now, instant power when you prod the tall skinny one. They adjusted the shims, checked valve clearance, replaced my exhaust flange gaskets as well as the normal 100k km stuff... Total was $1426 which I was pretty happy with.
These part numbers have LX in front of them, assuming they are Lexus part numbers but I'm pretty sure they are the same anyway...
LX90915YZZB7 Oil Filter (F189)$17.85 LX1610060023 Water Pump (F694) $90.00 LXPZQ9900020 Coolant 4L $29.54 LX1356859045 Timing Belt $40.00 LX1910250020 Rotor Button $32.25 (2x) LX1375050020 Lifter, Valve $23.25 (2x) LX0888681015 Auto Trans Fluid $22.50 NG1780146060 Air Filter Element $66.00 LX1121350021 Cylinder Gasket (F696) $38.25 (2x) NG2330050040 Fuel Filter $103.40 LX9091602361 Drive Belt $150.00 NG6301DDV Idler Pulley Bearing $22.72 NG6203RS Pulley Bearing $15.00
Aside from that was just oil, washer fluid, fuel conditioner (?) and a couple of oil gaskets.
Prices from CMI Toyota Adelaide TOYOTA #13568-59045 Timing Belt $83 (from CMI Toyta, just for reference, I got this from the GATES water pump kit instead). TOYOTA 19102-50020 Distributor Rotor $51 cap has same part number but "hard to find", for $78ish... you'll want 2 of each.