Free: Contests & Raffles.
You might try Clover creek ranch in central Oregon. It's a high fence ranch but it's around 2500 acres of fairly rough country, and I never felt the animals were inhibited from getting away from me by the fence. They have feral hogs and used to have some true russions as well. Kind of open high desert sort of country, so would have been a simple thing to whack the hogs with a rifle, but bow hunting it was not a slam dunk. Some guys in our party actually didn't get hogs, so it wasn't easy, at least the time I was there, probably 1998 or so. The meat was excellent and we had a great time. Fairly inexpensive, I think I paid around $300 and the hog I killed weighed around 350 live weight, my cousin killed one a bit bigger for the same price.