You're asking someone who hasn't lived in that area since the 80s (when Myer was called Grace Bros )... but yeah, afaik that Toyworld closed down a few years ago. Very sad as a lot of my G1 toys came from that store. *sniff*
That explains it, and also why the young retail customer service staff nearby had no idea of what I was on about. Time seemed to fly by during the 3 years I lived/worked in Melbourne.