You can now preorder the The Star Wars Retro Collection 3.75-Inch Wave 1 Figures at Entertainment Earth. Price is $63.99 for a set of 6. Estimated arrival is August 2019.
These are a shared Exclusive that was first available at Target stores but sold out. So if you missed them now is your chance to preorder them from Entertainment Earth. Not sure if these will sell out quick or not, so don't wait to long to place a preorder if you are in need.