I'm not sure what you mean by service fees. The web site is constantly evolving.
You know the service fees you charge when an account has not been accessed in a while.
Just having another look at your site. Why would anyone pay for a demo of how to parse an FBX file and convert to your own format when all this information is available with the Autodesk SDK ? The FBX is binary format yet you are converting to ansi text? Also to add this I see no acknowledgement of the use of the SDK or the copyright statement which must be included, so I can only assume you have reversed engineered it which is against the licence.