Telstra have their 4GX wi-fi Pro for $69 which is $50 off (it is the Huawei E5787Ph-67a for those interested).
There is currently activation bonus so you get 30gb with the modem (valid for 30 days activated by 8 July).
Modem will be locked to Telstra - looks like unlocking fee after 6 months is $25 (not sure what it is before 6 months).
I don’t know much about these modems so excuse my ignorance. But can I put my phone SIM card in it to use all the data I have on my phone?