Welcome to the Forum!!
Well if Difflock's post on THIS thread is anything to go by, it is going to be costly.... He paid R7.500 . Shop around. The amount he paid for the 150,000 service on his KZTE 3.0 D/C 2004 (includes V-belt), seems way to high. Any Toyota dealer will be able to give you a quote in seconds. Make sure they email you a copy and check what is listed.