Lisa,
They do have different rates for different times of the year. Right now is the most expensive. The membership is $85 per year plus the per round fee. From 10/1/03-1/15/04 it was $50 per round. They haven't got the rates for 5/3 forward posted yet. They should be the lowest for the year. They also usually have a lower twilight rate but they don't have it posted.