It'll vary depending on the size of the match and the area of the country you're in. Local matches here run about $20, some with a $5 discount for people who are members of the range.
The Smith & Wesson U.S. National Steel Championship is being held not far away. The entry fee for that is $175, but it's a national event, and there are prizes, both cash and other stuff.
"An armed society is a polite society." — Robert A. Heinlein
"After a shooting spree, they always want to take the guns away from the people who didn't do it. I sure as hell wouldn't want to live in a society where the only people allowed guns are the police and the military."
— William S. Burroughs