YOUDABEST2019
I received an email survey from TaxiBox today with a reward at the end for $50 off your next TaxiBox using the coupon code YOUDABEST2019.
It may or may not be compatible with their Tetris promotion (https://www.taxibox.com.au/8-bit/) in which you can get up to $75 discount during March 2019.
I've used them myself for when I moved overseas for 18 months and have no complaints. The box was dropped off and picked up exactly as booked at the beginning and end of the hire period.
TAXIBOX is only available in Melbourne, Sydney and Brisbane. If you want to check if they deliver to your postcode, you can do so here: https://www.taxibox.com.au/booking/