Fitbit Charge 3 has dropped to $109 at JB Hi-Fi and Amazon have matched it. Looks like the all-time lowest if I'm not mistaken. Available in black/graphite as well as blue grey/rose gold.

JB Hi-Fi

Fitbit Charge 3 (Black/Graphite Aluminium) $109

Fitbit Charge 3 (Blue Grey/Rose Gold Aluminium) $109

Amazon AU

Fitbit Charge 3 (Black/Graphite Aluminium) $109 $108

Fitbit Charge 3 (Blue Grey/Rose Gold Aluminium) $109 $108

Officeworks

Fitbit Charge 3 Advanced Activity Tracker Graphite/Black $109 $108

Fitbit Charge 3 Activity Tracker Rose Gold/Blue $109 $108

Harvey Norman

Fitbit Charge 3 Fitness Tracker $108 $117

The Good Guys