If you are a USSF referee, your unit dues are $25.00. 
If you are a WIAA referee, your unit dues are $35.00.

If you are a SAY referee, your unit dues are $15.00

If you referee of all these, your total dues are $75.00.

The money collected for dues is used for materials needed to run the unit, website annual payment, provide a yearly BASRU officiating related gift, part of WIAA dues goes to pay arbiter system fee, and for unit meetings.