Myslexia invite new writers to submit poems or stories on the theme of monsters. I don't think there's any prize or payment, but I could be wrong.
update I've been informed they do pay for all published work (thanks, Linda)
It seems people who aren't women are permitted to enter this competition, but I could be wrong about that too as everything else they do seems to be for women only.
Another update. I was wrong again! Only women can submit.