The new Humble Bundle for Image comics is KILLER. The only book I'm familiar with other than Walking Dead is LAZARUS and it's a fantastic comic. I recently bought issue one on comixology and was about to buy the rest but lo and behold here's the first collection for $1+ (I went $10 to unlock the higher tier titles other than Walking Dead - read a bunch already so don't need those volumes). Holy shit, get it for Lazarus if nothing else. (It's a dystopian near future post economic collapse- rad book!)
https://www.humblebundle.com