I got pretty annoyed by Flick not giving me any notifications at all through the app.(not even the spike come through today despite 60 cents / kwH!)
Maybe it's because I seem to have a minimum price of 18 cents at all times (low user plan), who knows.
Anyway, I created a webapp last week that queries the Flick API. (Based on madleech's project on Github)
You can set your own price threshold plus I decided that anything > 40 cents is noteworthy. ;-)
You can get notifications via email, slack message and / or IFTTT triggers.
It also has some nice gimmicks like exporting all the data of the price updates or a little price chart over the last day or so, etc.
That one caught the spike this morning well (see one of the screenshots below) - easier than trying the flick website that was mostly down...
Happy to give some people access to test it.
Other REST / SOAP interfaces should be easy to implement too (Home Assistant? Smartthings?).