Been waiting for a good deal on the Sony WH-1000XM4's for a long time.
Finally found a decent bargain on the JB Hi-Fi Commercial website for $392.33 ($402.33 delivered). Nowhere near as good as the previous Good Guys Commercial deal, but still a pretty good bargain compared to more recent deals on the XM4.
I'm sure many people will be asking how to get access to JB Hi-Fi Commercial. All I can tell is you what worked for me. I recently found out that my profession has affiliation with Member Advantage and when I searched the members deals within there, I discovered they also offer access to the JB Hi-Fi Commercial site.
Hope this helps someone else!
EDIT: Looks like the actual price varies according to the type of JB Hi-Fi Commercial account used. Some are reporting prices a low as $359.93; others are over $400. Mine came up as $392.33, which was a good enough deal for me to complete the purchase.
Very good price