gates:. I'd eagerly grab a pre-loved one with good main & big-end bearings in place.
I dont think you will find one (I havent see one in over 7 years)
gates: I cannot afford to buy a new crank complete from Yamaha City here in Melb
I realy dont think you will find one. But THEY ARE available new ( Put in a new one and you will have no drama's. Put in a second hand one and you may be buying a new one later anyway. The old saying.You get what you pay for... Or put it this way. You buy a cheap helmet if you have a cheap head.)