Was there ever a discount event involving library research?

[Unsymmetrical Trashcan]

The title says it all.

I started playing around a year ago, and I know that every week (Thursday afternoon in my country), there is a discount event, sometimes involving upgrades and other sorts of items.

But never in my life I saw a discount for the library, maybe I missed while I was inactive.

Can anyone clarify on that, please? thanks.

 

[KniferX]

You missed it, there was a discount for them, 2 months ago maybe. Used that one for the oil chapters.

 

[Delta3519]

With the new update coming that opens a 2nd slot for the library we might see discount events for it. The winter of the ages might bring it as well..... we will have to wait and see