As the topic stated, I can't find it anymore. Did telstraclear remove this plan or what? I find it to be best of value compare to warp speed plans.

Also, the bill always confuses me when I change plan in the middle of a monthly period. Say, if I use 90g plan at start of a month, then change to 60g in the middle of the same month, in the end I will get a 60g plan bill. Can't people use this to exploit data cap? I could use 150g data and paying for a 60g plan in the end?