I haven’t seen these in the wild yet, but via eBay and other outlets, they are showing up now, apparently at Walmart first.
In addition to the set above (Black Mask and Harley on roller skates), the sets seen below are also out and about (all pictures come from eBay):
Wonder Woman and Cheetah:
Batman and Rebirth garb Huntress:
The Batman and Huntress set has a packaging variant where Helena is not wearing her jacket, while her crossbow is packaged beneath her:
Happy Hunting Imaginext fans