Yes, you can certainly incorporate Google maps into BIRT reports via the JSAPI.
It depends on how you deploy the reports for customers. If you want to use an iHub server as part of your deployment architecture to manage your app and provide scalability and security among other benefits of iHub, then there are definitely licensing costs associated with that.
Most BIRT reports are used for commercial purposes rather than for personal projects.
The specifics of licensing for commercial BIRT depend on various aspects of the application and deployment. You should have a conversation with Actuate sales to describe your proposed application, and then they can assist you with understanding options for licensing.
Many thanks for your reply. Do you have any example/tutorial on how to incorporate google maps into BIRT using JSAPI. After analyzing in detail, we have decided that we will go for the free edition of BIRT (Eclipse BIRT) and will need to find ways of incorporating differnt charts using the free edition of BIRT. I will appreciate if you could guide me a bit more