Given the generally atrocious default security of most home router vendors, I'd assume its equally terrible, and maybe you get a nice surprise.

> $10/day is $300+ a month - I pay $50/month for 7GB of data on Telstra's 3G/4G networks

As I said, I was using it when travelling from home (Thailand), so it was $10 a day (max, if i didn't use it or used less than the cap amount, no/less cost) for unlimited data (still using Telstra's network). The alternative was to use a prepaid telstra sim, which from memory at the time gave me maybe 4 gb of data for.. $59 or $69?

I wasn't suggesting its an option for you, just explaining that those "free wifi" things always seem like a shitty deal to me, compared to the cost of your own data service.

> I haven't actually needed to use Telstra Air because the middle of the city has free wifi by iiNet/Internode (RIP)

I must have missed something, what's the RIP for?