If you’re a comic fan, I’m sure you’re already keeping up with East of West. But if not, shame on you, and here is a bundle of all 45 issues for $16.99
https://www.comixology.com/East-of-W...le/bundle/1891
Comixology has re-worked their free page. There are now almost 1000 books on it, in a few categories. Not nearly all the freebies available, but a good start. Many more can be found by searching for free, or sampler, or preview, or FCBD; and there are dozens (hundreds?) more just random freebies throughout.
https://www.comixology.com/Free-Comics/page/175