aren't all these articles, available somewhere on the net? In other words,
why spend money, when any question that is asked, can be answered, right
here, or by someone in this(these) groups?

Or why buy books, or magazines, or anything printed when you can surf
the net? It's another medium. They may not be of interest to you,
but many people like to get away from their computer and have some
bedside reading or elsewhere. Also, these newsletters are not
printed on the net that I know of, and they contain an interesting
history and collection of the local Cichlid club.
I respect that you may not be interested in them, but I suppose
someone else will be. I enjoyed them for many years, and now
would like to pass them on to someone else, rather them recycle
them with the garbage.
Cheers,
Philip