Check out the previous presentation the info you want is there...

Check out the previous presentation the info you want is there on trials comparing standard brakes with terrra dura brakes

http://www.asx.com.au/asxpdf/20171123/pdf/43phlfnfyk1zf0.pdf

I had a little meeting with Martin and their Perth facility , I was impressed with the quality , thickness of rotor and calipers , sealability relative simplicity, (low weight compared to SIBS brake) and therefore can logically deduce the payback (as mentioned in the presentation link above ) of about 4 months in some cases quoted of the new Terra Dura brake would be valid .
I think they finally have a ground braking product .

Some issues with quality control ,but hopefully that is behind them

As those use to offroad driving know In many ways its not so much about the number of kms but about the conditions the vehicle is faced with you can wipe out a set of brakes offroad in a day in certain conditions
The down time to repair , and the cost of that repair plus safety issues need to be balanced against the sealed brake purchase price