There are no specific mention of fees associated with the Right to Buy application in the information available from High Peak Council. Instead, the primary requirement is to complete and return a Notice claiming the Right to Buy (RTB1 form).
However, be aware that once you proceed with the application, any legal costs associated with the purchase would typically be covered by you, and it's advisable to consult a solicitor for guidance throughout the process.
If you're ready to apply, you can find the necessary form here.