(Re-posted as forum as I'm not allowed to post this as a bargain)
Asked a JB Hi-Fi store employee for their best price on a Chromecast 8 months ago, somehow got one for $49.
I've been out to get another one to replace my PS4 as a Plex device so I have a latest receipt to give to you.
Officeworks are dicks about price matching, they say it has to be a catalogue.
You want to find a big store with employee's who just will push the buttons if it meets the requirements. Somehow, I got this from Harvey Norman.
JB Hi-Fi wouldn't price match my original receipt because they wont price match themselves, but they should price match HN.
You're most likely to get this if you're in SA.
Good luck! These make great XMAS presents.