Here is confirmation of the rise to 15%
http://www.accomnews.com.au/industry/154-news-in-brief/4841-surprise-wotif-commissions-up-15?utm_source=newsletter_696&utm_medium=email&utm_campaign=accommodation-industry-news-thursday-26th-february-2015-proof#jacommentid:1597
The only way to fight is start loading the rates on OTA's by the commission.