And Optus are now doing unlimited starting at $60/mo, dropping...

And Optus are now doing unlimited starting at $60/mo, dropping to $40/mo for your 3rd SIM. https://www.ozbargain.com.au/node/364771

Granted there are some conditions/limitations on the actual usage but if overseas markets are anything to go by, the entire market will inevitably be unlimited and fighting on price. It is a race to the bottom.

Bringing this back to AYS, IMHO friendlydwarves nailed it earlier -- the issue for Amaysim is what is it's backstop valuation?

One can look to the future based on the cross-selling opportunities but the reality is their core business is being demolished right now so if the cross-sell margin doesn't eventuate how much is AYS worth?