Hey guys thanks for the replies.
I've also found some ones in ebay sold in NSW for a reasonable price. He bought it second hand so I hope he wouldn't mind.
@Paul G - I walked to get to the lift and my bag bumped/caught onto the edge and then it just came off. I stood there for a solid minute figuring out why it broke off so easily. I was confused how such an expensive looking bike had such measly parts. I've come to the conclusion it was already broken and they used silicone to do a quick fix (see imgur link)