I'd happily pay if I was charged 25-50 cents per article. But I wouln't want to have to subscribe to the entire magazine for only one article. I do not think the would be many who only follow a few preferred mags online, people usually end up on articles via links, and read the article and do not see the website until they bump into some other link to it.
But if the abovementioned service existed, where I had deposited some amount, and the mag had a link, "Connect with Readbettr to read the rest of the article", after a compelling abstract, and when I clicked, it automatically charged me ¢50 and let me read the article, with a single login, and it sent me a PDF copy automatically, I'd be a happy paying user of many online news and content sources.
This thing does not exist, and I leave the idea here for the taking. Someone please make this.
It's only targeting the Netherlands and Germany right now, but a few big name papers from the US are already available. And it's an app instead of a website. Apparently you can even get refunds for articles after reading them.