I've seen folks spend 200$ and still don't know

I see folks routinely buy snake oils, try wonky water schemes, methods etc I know that do not work for more.
It's 12.95$, a tad less if you are in a plant club(both Greg and myself support and promote that)........... not 50$, who told you it was 50$?
and I ought to know..........
You do not get the same info here as you will in a written article.
Regards,
Tom Barr