Use of Odata service for BTP/CPI to integrate with third party web application has additional cost?

[Nitindigule]

Dear Team,

We are implementing SAP S4HANA Public Cloud to one of our clients.

The client has already one web portal developed for some additional processes.

Now, client wants to integrate SAP with his Web Portal where some of the data from SAP will post to Web portal where user can use that data and generate reports or complete the process.

To fulfil this requirement, we have developed some OData in application development tool (eclipse).

We use that OData in BTP to create custom FIORI app.  

We would like to know, for the above process, does the client will charge with any additional cost?

Does it have any impact on BTP consumption.

Thanks,

Nitin