Good news for Omni magazine fans – all 200 issues are now available on Amazon for $2.99 each, or free if you're a Kindle Unlimited subscriber.
Up until a couple of years ago the science and science fiction magazine, which was created by Bob Guccione of Penthouse and his wife Kathy Keeton and ran from 1978–1995, could be be accessed for free on the Internet Archive, but it was taken down.
According to The Verge:
Earlier this week, Jerrick Media, owner of the Omni brand, announced that it was partnering with the Museum of Science Fiction to put the original issues of the magazine back online — this time in high-resolution. Instead of Archive.org, readers can find all 200 issues of the magazine on Amazon...
It’s a bit of a shame that the issues are no longer on the Internet Archive, but it is good to see that they’re back online once again. A portion of the proceeds from sales of the magazine will go to support the museum.
You can browse back issues at Omni Archive and then if you need to get your hands on a copy you can purchase individual copies from the site via Amazon.