There's a new start-up epublisher in Canada at
http://museituppublishing.com/musepub/. They're so new that I can't recommend them or otherwise comment. But they are considering work of 3,000 words or more. I guess they're thinking in terms of building co-authored anthologies, but I can't be sure. Hope this is of some help, Dadioflex. Good luck and cheers. Neil