There is no one fixed rate for an index; various factors come into play, not least the level of complexity of the text. Each indexing commission is unique and I am always prepared to discuss your requirements and provide a quote. Please go to 'Contact Me' with the details of your project and to get the process started. Typical rates are around those recommended by the Society of Indexers (details of which can be found here) but I am always happy to consider any size project.
With the advent of e-books the world of publishing is changing, and therefore so is indexing. The impact of new technology is an area I am keen to keep pace with and so I have undertaken additional training in Embedded Indexing and I particularly welcome commissions using this method.
The Society of Indexers also has more information of indexing in the digital age, which is available here