Boom collections sale ends 7/20/15, 51 collections for up to 2/3 off.
https://www.comixology.com/Boom-Coll...Sale/page/7428
Ant-Man sale at Marvel ends 7/20/15, 2 collections and 27 singles, classic stuff all the way up to a just released issue.
https://www.comixology.com/Ant-Man-Sale/page/7450
Matt Kindt weekend sale at Dark Horse; 40 singles at $.99 each, including the award winning Mind MGMT.
https://digital.darkhorse.com/genre/228/