competitions for students

[Kroian]

Hi;
I have recently been approached by a NH philanthropist who wishes to begin an annual piano competition for local gifted students up to age 19.

Does anyone have any idea what kind of fee range would be typical for a judge in a competition of this nature?  The 1st prize he plans to offer is $2500, and we expect a field of no more than 25.

Any feedback would be much appreciated.