Here's my piece in The Molotov Cocktail. As is typically the case years after I write something, I now think it needs some heavy revision and expansion. ? Oh well. People read it as it is, and maybe some of them even liked it! Content Warning: cults, poisoning, drugs. Yeehaw.
https://themolotovcocktail.com/about/archive-vols-1-3/vol-8/vol-8-issue-18/rainbow-fungus-rainbow/
The other pieces were only in print, not online, but if you really want to read them I can send a PDF.
As far as money goes, it varies widely. I'm told that bigger publications like The New Yorker and The Atlantic pay pretty well. Some magazines pay by the word, some by the page, some a flat rate for contributors. Smallerer journals generally seem to pay $20-100 for first rights to flash fiction, more for longer works.
Poetry is not entirely my jive, so I can't really speak to that.