Promo Code?

im planning on buying the tier 1 figurines in the 2k store. these few questions are angled more towards the people that can answer these questions

1 . are there any promo codes I could use? do they stack with the $4 off of the figurines currently available?
2. Will there be a tier 2 set of figurines ?

if you cant answer this try to reply with someone you know that could… thanks
in case you didnt know what i was talking about

@DamJess @MacMan you two have a cool outline next to your name. any ideas?