Can I just say, anyone who uses the fee extension over crazy price api's or downloaded lists is my friend!
Said lists are imported into the system from the CSV file format that is given to registrars by this command-line tool: https://github.com/google/nomulus/blob/master/java/google/re...
By the way, can I just say as an aside, that it's so awesome that I can finally link to and discuss our code in the open (I wrote this pricing stuff under stuff).