I have subscribed and I was interested in one of the books which said it was $1.99 but when I clicked on the link it took me to Amazon where it was $12.99. Is there something I am missing to get them at the cheaper price?
The deals only last for a finite period of time. The email tends to be sent early morning Aus time so if you don't check it til evening, then the deal may be finished. I missed out a few times for that reason.
The time period is set by the publisher, so sometimes you can click the next day and it's still running.