The new Adventure Time P2 will soon be available directly from Cryptozoic's website

The promo P2 is available now from the on-line store. You can also purchase separately at least 2 different SDCC autos that were exclusive to the show, but they are not cheap.

As noted above, the new NSU contains Batman Hush P1 and P2 promos, although the P2 is much harder to find. P2 is a black and white version of P1.

Cryptozoic will have Black Friday exclusives through its on-line store, beginning on Nov 29.

A Christmas Story promo P3 (P1 was at the recent Philly show and P2 was in NSU)

Dark Nights Metal P4 (P1 to P3 were previously available elsewhere)

This info is a year late, but What We Do in the Shadows promo P5 was available through the Crypto on-line store in November 2023