Also, zine is not available forever. I think it has usually one print run or sold until next issue comes out. Print run appears to be fairly large, but unlike with records, I think there isn't such second hand market for zines, so they tend to disappear.
Rocker review section as well as adverts can be really neat from perspective that it is so different from what there is in the other zines? Of course some cross-over, but in general its quite amazing to see how different type of things are covered and how there is a lot of things I haven't heard of or even seen.
I have not had any issues of Rocker for sale, always bought it from Satatuhatta.