I'm not saying that you shouldn't. I'm just laying out the continuum of possibilities. It is the individual's decision where to place himself within that continuum.
I'm not a professional and, as much as I would love to get a paid gig, I don't think my work is good enough or well known enough to demand a high price. But, what the hell? Even a blind pig can find the occasional apple! Right?
If it is a small, local publication I'd charge less than if it was a national publication. I'd have a hard time deciding.
I could never demand the prices some of you guys regularly get. You might be able to ask for hundreds or even thousands of dollars and get it. Me? I'd be lucky to get $100.00 on a good day.
That's why I gave the answer I wrote above.