Bryco, Jennings/Jimenez.. in .22 or .25, run around there. Quality is spotty in many cases, but my Jennings J-22 (circa 1987) has run well for its intended purpose.
Saw a few weeks back a worn-but-functional Glenfield .22 rifle in the local gun "showroom" for $40. Left it there, but then turned back, thinking it would make a good behind-the-seat truck gun. It was gone.
Just gotta keep checking the used gun cases and pawn shops. What I see in there that runs just over one bill varies quite a bit.