So what precisely is this mystery AusTOTE rake?

Rake _ Market
8.0% = 108.70%
7.5% = 108.11%
7.0% = 107.53%

Yesterday the lowest AusTOTE market was 108.3% so the rake should almost certainly be 7.5%.

Now that they have removed any disclosure as to their actual rake it will be very easy for them to keep hiking it without notice.

I'm amused that this important issue has finally made its way to another forum, although some still seem to believe that it's still a 5% rake just because AusTOTE hasn't bothered disclosing the 50% hike.