Public sector pays pretty well here but the salary bands are strictly adhered to. There are guidelines in place to direct managers what to offer, based on their confidence in your ability to do the job. The pay scales typically have a mid-point that is considered 100% and you will generally not be offered above this as a starting point. Many will offer you below that as you're an unknown quantity, but also to ensure that there is room for growth in your annual performance reviews (as the ranges aren't reviewed annually but your salary is).
To demonstrate this. If the salary range is $60k-$80k, the 100% point is $70k and that is likely to be the maximum offered. Having said this, I was offered 108% of band when I joined my organisation. Then I got restructured, promoted and put on 100% of a much higher salary band!