Councillors have a duty to reflect the views of the community in their decisions, he says.
There will be many who agree with Mr Coster as a matter of principle or of faith.
In terms of the law, however, the Prostitution Reform Act 2003 legalised and regulated the sex trade which means brothels, as long as they comply with the rules, are legitimate businesses.
This is about fairness. The cost of monitoring brothels has reduced thanks to a high degree of co-operation from the prostitution sector. Under the proposed changes the city's sex industry would get credit for that.
Mr Crosby said proposed increases affecting other industries were in line with the Consumer Price Index.
The council has to be dispassionate when it comes to charges otherwise it could be accused of bias.
It deserves credit for taking a balanced view of its charges with one notable exception. It would, in my view, be mean-spirited to start charging children under-16 to camp at McLaren Falls.