I remember when the Charter Arms ones used to be $99 used any day of the week. Handy lil pack rifle, floats too as they have styrofoam in the stock.
Ramline made 30 rnd plastic mags for a while(semi-ok), and a few other made various steel ones. Kinda rare to find the after-market ones now.
Just be careful if you remove the sideplate and bolt for a full cleaning, it can be rather tough to get the twin recoil springs to not flop in half and knot up with each other when trying to get the bolt back in.