Within the last year I've secured regular assignments for a magazine (750 words, $250) and had a niche blog paying $250 for 500-600 words.
I've written for magazines that paid $1 a word, and laughingly turned out small ones that asked for 1,000 words, a sidebar AND 1-2 good photos for $50.
Istopped writing for a website that wanted a similar word count and sidebar but requested 20-25 photos with each submission, all for $300 to $350. Why? Because after the time involved in putting together and writing the story, and selecting photos (my photos), the pay rate devalued everything submitted. The photos were worth only a few bucks, if anything, yet the site sold an advertising "frame" around it and made money.
Don't give away your talents for paltry sums. You can be firm in asking for more money for the experience you bring. And if they won't pay, let them buy **** from some wannabe.