The Russian Nagant 30 cal revolvers can often be found for $99.
Not really good for anything, but its a heck of a lot of fun to shoot.
The double action trigger really sucks but the single action is fair. The below target was shot with mine at 15 yards. Not bad for this revolver.
Like I said, it's a heck of a fun gun to shoot. One of these days I'm going to show up at a Multi or 3 gun match with this revolver and my Mosin Rifle.