It depends largely on the genre, and from there, the audience and distribution range of the publication.
In the science fiction/fantasy/horror area, five cents per word is considered "professional" rates, and most short stories are going to average from 1000 to 5000 words. So, you're very lucky to get a couple hundred bucks -- and that's for the very small percentage of stories that are paid at pro rates. Far, far more are paid at semi-pro or contribution rates, which means you get contributor copies or $5-35.
Outside of genre magazines, in the literary reviews, you'll find even more variance. Some of the most prestigous publications in America don't pay anything at all, but an appearance in one of those digests can be your ticket into a novel publication from a major publishing house.
Huge distribution magazines, such as Playboy, pay in the thousands for fiction, but they also tend to offer their fiction slots to the best known writers of the day.
The quick summary is that you're very unlikely to make significant money publishing short stories. Short stories are best used for three things:
1. Get exposure to a fan base and to potential novel publishers.
2. Practice your writing and story-telling techniques.
3. For the enjoyment of the writer.
I'm an author.