A grass-roots charity auction on Twitter in support of comic-book retailers whose businesses have been disrupted by the coronavirus pandemic has netted more than $430,000.

Up for bid were comics, original art and one-of-a-kind experiences. More than 100 contributors participated, using the Twitter hashtag #Creators4Comics, with proceeds going to the Book Industry Charitable Foundation.

Many comics creators contributed additional artwork or offered some kind of Zoom experience to the second-highest bidders, which was a surprise, said Kami Garcia, a writer behind the effort.

The author Gwenda Bond, another of the Creators 4 Comics organizers, said that the group chose the foundation, which grants emergency relief to booksellers, because it processes aid rapidly and because individual employees as well as small businesses owners could apply for assistance.