$315
I have the Hatsan 30 cal, which took care of my groundhog-under-the-yardbarn problem.
Downside? The 30 cal is "city-loud"; I keep waiting for my neighbor to drop a dime on me.
Now I'm plagued with squirrels, chipmunks and mice eating up my yardbarn: a flat shooting (and quiet!!) .25 cal would be just the ticket. Hope I win!