Kodansha Comics is currently having a sale on B&N and Kobo only as far as I can tell. B&N has a landing page for it. (
https://www.barnesandnoble.com/b/kod...ice%7C0&page=1) Everything in the first 11 pages is free. Basically, the number one issues are free on select Kodansha manga. The rest are 50% off. Find something you want at B&N, then search for it on Kobo.com. It'll have the same price, at least with all the manga I tested. Of course, this isn't helpful if you aren't into manga, but it's a sale! Haha I was happy for it.