Free: Contests & Raffles.
I know that there are spots in Monroe where you can shoot, but I don't know where they are specifically.However, if you go around 30 miles east on Highway 2, you're in the National Forest and can shoot wherever it is safe to do so.
The Seattle rifle and pistol club in machias, north of Snohomish, has an actual pattern board that you can shoot at. Not sure of hours or when it’s open to non-members but check out the website or give them a call.
Go shoot at Stillwater or cherry valley in Duvall if you have migratory bird since it’s still open. Obviously don’t blow anyone’s hunts
There are plenty of places off Hwy 2. Just be sure you pick up your casings and garbage as I am tired of picking up after people.