I was on the creative cloud plan paying about $500 AU and something. Yes, it was my first 12 months on CCloud rather than Photographers pack + Premier.
The new price is almost $900.
I am pretty certain, nowhere, did it say when I signed up for the suite did it say that is was some sort of introductory offer and next year it will 75% more. I quite savvy on that sort of thing and always look at the fine print so I am pretty sure I didnt miss anything as to 'introductory offer'