I have found both of the first two waves at the local brick and mortar TRU. They are located in the Neca section, near the Expendables, McFarlane Sports figs, Hobbit stuff, Walking Dead stuff, Robocop stuff, etc. That aisle has become my first stop even before Star Wars.
They sell out VERY quickly here though so you may just be looking for a shelf tag.
I'm not sure if our TRU will stock the 18" figures or not. I have been hoping so but may have to resort to buying them online. Seems like they would want those out on the floor in time for the holidays but who knows.
Good luck! They are great figures, hope you can find them!