[Captain Nash]

Just checked amazon for the two packs - they are partially starting to show up now. They are through third party sellers and are not in stock (due in next week) so I would definitely hold off, but it's good to know they're putting in an appearance of some kind.

The Sam Wilson/Vance Astro link: Amazon.com: Marvel Legends Shield-Wielding Heroes Comic Two Pack Vance Astro and Sam Wilson Captain America Secret Wars Special Edition: Toys & Games

Right now it's $49.99 USD so yeah, definitely hold off. I'm sure within a month the price will be fairly close to retail.

edit to add I'm looking for the rest but I can't seem to find them. This may be the only one up for right now. Still, they should all be showing up soon I'd guess.