The Marlin shoots .38 Special ammo as well. So plinker ammo should be readily available for under $10 for 50. On the other end of the spectrum, you can get legit deer rounds for it, too, for a good deal more money.
The Marlin 1894C is one of the most versatile long guns around, I think. As long as you don't need grizzly defense or a 300 yard deer round, you can do everything from plink to hunt big game with it.
EDIT: Oops, you're talking about the .44 version. A bit more for the ammo, then. I'm not sure how set you are on the caliber, but if you do want a good plinker too, the .357 gun is shorter and lighter, but a real cannon with Buffalo Bore ammo.