Other way round. Someone had taken a bunch of information from the notes and added it to the wikipedia page.
LOL.
icwatudidthere.
Doesn't change the fact that some of the content is available already on the internet, which kinda makes you question why you'd even buy ~premium~ resources, if they're widely available and not very ~premium~
Maybe i'm wrong though, and maybe whoever said some of the content was on wikipedia lied, but eh, who knows.
I've personally seen the resources (my cousin was gifted a shit load of printed bos premium resources for some of my subjects, and gave them to me when she finished her HSC) and I can honestly say they aren't anything spectacular. I mean, you could probably end up writing similar quality notes yourself if you were bothered (and if you wrote them yourself, you'll probably remember them more too).
I'm staring at them right now, and maybe it's just me, but from these notes, it's pretty basic tbh. You could probably find essentially the exact same thing from what's free to download on bos already. I'm not meaning to bag out premium resources, but you've gotta get your dollars worth.
I'm also pretty curious as to who made the notes. Were they past students or something?
I considered buying premium resources at one stage myself, but I didn't have to because my cousin gave me printed versions of it. But tbh, I don't even use it because it isn't very useful to me. Another girl in my grade paid for premium resources, and she was actually pretty disappointed and said they were of "alright" quality.