Super Stash Sale and ExileCon Qualifier Event This Weekend

What does "Super stash sale" mean exactly ? If its the ordinary 20% off of a overpriced pixels, but bigger variety, that`s not super in my personal opinion.

I've yet to see a decent "sale" in Path of Exile.
The pixels in this game are too damn expensive for just pixels.
I get that people work hard to make them, and the game is free so there
should be a way for devs to make money, all on board with that.
Still, a pack for 420$ or whatever is insane price. If that pack was like 150$, the sells will triple probably, and the money gain wont change much, or at least
that is my understanding.

I would love to spend 450$, but not for the amount i am getting currently. Totaly not worth it.Same goes for stash tabs.

:D