Super/Winter Packs and Beta

[Ukase]

Is there a way to buy Super/Winter packs on Brainstorm? Or does my character need to have them in inventory and then transfer to Brainstorm with them? 
I know some time ago, Bopper (I think) opened a ton of packs to showcase odds of getting certain items. 

I was wanting to get some Frostbites and needed some Candy Canes to get them - or direct from winter packs, But the character I was on didn't have any. 
I was able to get accomplished what I wanted to do - but the question remains - where would you get packs on Brainstorm?