A nonprofit magazine called NFT (Nerd For Tech) with a Medium account (https://editorialteamnft.medium.com/) and its own website (https://www.nerdfortech.org/) contacted me out of the blue at my Medium blog and said they liked one particular nonfiction (recreational mathematics/math education) article of mine (https://bartshmatthew.medium.com/its-easy-to-convert-from-base-ten-to-base-one-thousand-ae0bf72d53d4) that I had published on my Medium blog. They added that they wanted to feature it.
But then their system said they never pay for articles, and I would retain full ownership and could remove it from their system whenever I wanted. The 'nonprofit' Medium account has a couple of thousand followers. I couldn't find anything on Google about the website.
I am a complete writing for publication noob, having never sold any writing, nor ever tried to, so I was quite surprised and pleased by this.
Then I thought, why not negotiate for payment? After all, even a pittance would allow me to say honestly that I had sold the article (or at least got paid), making me a professional writer. Is there any chance they would make an exception in my case, and pay me some money?