Midway is selling refurbished Daisy Powerline 880 air rifles for $19.99. That’s a steal. I got one of these for Christmas when I was about 13, I think, and I wore that thing out. It took a while. I shot pellets out of it almost exclusively. The squirrels in the back yard hated me.
Read the reviews – apparently Daisy’s QC has slipped, but since these are refurb’d, hopefully they’re all in good working order.
Still, for $20, (plus freight) seems like a decent risk. YMMV