Just saw this deal on today, and saw that it ends on 13th.
Managed to get a sweet deal in JB Hi-Fi, dropping them to $378, by price-matching with the Good Guys and using the Wicked Wednesday 10% off coupon code (https://www.jbhifi.com.au/pages/wicked-wednesday).
I saw that the Good Guys eBay store deal which is priced the same, so not sure if this is needed/a duplicate, but nevertheless thought I'd share my experience - the JB Hi-Fi 10% off was the sweetener for me.
Is it worth it, funny the XM4s review better?