Hi,
I have vast experience of implementation of tasks (creation of PDF), similar to your, in my previous projects.
Cost of the project depends on the details of your project.
I marked 111$ by the following:
1) Harmonization and clarification = 1h
2) Create a form and script processing = 1h
3) Review and update your source PDF = 1h
4) Output to PDF = 1h
5) Testing and debugging, updating your preferences = 1-2h
Total: 5h, costs $ 111
If you do a very simple task to implement - let's discuss the cost.