If you switch to AGL (direct, and online only) for VIC customers you'll get a $100 Prepaid Mastercard (that's $50 for Elec, $50 for gas). AGL are competitive in VIC, run a 24x7 support centre and have #1 ranked app in energy.
Good news is NSW and QLD customers can still get the $100 bill credit on online sign up ($50 for SA).
Cheers
Link to deal details? Don’t see it from their main page you linked.
Need details, e.g how long do you have to have not been their customer to be eligible?