I post stories of that length here, sometimes serialised (when they lend themselves to it). Otherwise, I just publish and think what the hell.

Examples:

Vindicta. A 12,000ish word ghost story from last year, serialised with links to next parts. Part one: https://medium.com/fictions-official/vindicta-part-1-of-3-b77554e55c7c

In-Between: A 10,000ish word short story (also a ghost story, but more of a satire). I published all in one hit (I didn't want to divide it up): https://medium.com/fictions-official/in-between-9631093dc799

My published short story anthologies are Infestation: A Horror Anthology (here) and Love and Other Punishments, a dystopian sci-fi anthology (here). Both are around 80,000 - 85,000 words in total, and I was happy with the results to a point (more sales would be nice, obviously, and someone I must have pissed off in another life wrote a stinker of a review for the former, which you can read if on the link if you enjoy something really viciously scathing). :)