Wanderer's Haven Publications is a new press with an anthology call posted called "A Mythos Grimmly". They are looking for short stories of 3000 to 7000 words that are a mash up of a fairytale and a Lovecraftian Mythos. The deadline is May 1. Payment is to be $100 IF they have a successful Kickstarter (planned for May). You can find the details here.
My one hesitation here is that if the Kickstarter isn't successful they don't tell you what will happen with your story. There is a form at the site for you to contact them with any questions so if you're interested in this project be sure to find out all the details.