Artist Jingna Zhang built Cara, a platform explicitly intended to protect artists from having their art stolen by AI...and yet these people just won't leave them well enough alone.
From reading a bit more through various linked posts, I don't think they downloaded the artwork for the claimed $10, but scraped the site for a list of URLs from which to download it.
There are a number of references to the "dataset" (implied to just be this list) becoming useless if Cara were to implement stricter rate limiting.