That's what I like about Blendle's model. I'm an infrequent user (< 1 article a month) but I probably spent more on Blendle than the cost of a subscription to any one of Blendle's sources.
Out of all the articles I read, I think I clicked the refund button maybe twice, and that was only because the article was truly terrible.
I can say with certainty that I wouldn't have bothered reading any of these paywalled articles if Blendle didn't exist.
I've read good things on Medium, but if anything Sturgeon's Law is too generous regarding overall quality. Considering the nature of the beast, I'm not even sure it is possible to change the quality ratio without potentially breaking what Medium is.
I'd be happy chipping in sub-dollar amounts here and there for the good stuff, but I am not going to pay a flat fee for access to what amounts to a whole lot of tripe and just a few meatballs.