In the many discussions of paywalls I read, everybody mentions the WSJ, but nobody mentions Scientific American.
You can read the print edition, which is discounted heavily through subscription management services, or you can pay $40 to get the online version. SciAm has been doing this since 2009.
It is frustrating for me. I'd love to write about the articles, but it's too much hassle to do that for a paper publication. The online version is costlier than a discounted print subscription, and I like the magazine, so I'm not willing to pay for digital.
It's frustrating for me, but it seems to work for them. Unlike Newsweek, which is about ready to fit a business envelope, SciAm is holding its weight.
How do they do it? Is it institutional and academic subscriptions?