The Binge-Watching Cure is an interesting collection of increasingly-longer short stories, with the intent that the reader slowly acclimatises themselves to reading longer and longer work. The anthology starts with a 100 word story and goes all the way up to 25,000. They've finished reading for volume 1, but are now (unoficially) open to submissions for volume 2, which is all horror stories. The same conditions apply and there is not yet a closing date:
We’re looking for stellar horror stories of various lengths for The Binge-Watching Cure. The stories must have strong characters and compelling plots.
They're paying $200 USD for stories from 100 to 5,000 words and $500 USD for stories from 5,000 to 25,000. It's important to follow the instructions in their FAQ regarding cover letters and summaries.
If you’re sending in a story specifically for our horror edition, please start the subject line of your email with the words, “Horror Edition.”
Literarium link over here: https://literarium.net/market/the-binge-watching-cure/the-binge-watching-cure-ii-horror-stories