Oni Press sale has 50% off 17 different series (singles and collections) with codeword ONI until 7/27/15. Oni puts out some seriously good stuff; don't miss Letter 44, Queen & Country, I Was the Cat, and others.
https://www.comixology.com/Oni-Linewide-Sale/page/7446
Today only (7/24/15) sale from Marvel on Thunderbolts. $.99 singles on issues 1-32 and annual 1 of the 2012-2014 series.
https://www.comixology.com/Thunderbolts-Sale/page/7442
Graphic India sale on all(?) their books until 7/26/15 using codeword GRAPHIC. 50% off 21 different series. I think the stuff I just got in the current Humble Bundle will be enough to sate my curiosity here.
https://www.comixology.com/Graphic-India-Sale/page/7447
Dark Horse weekend sale is on B.R.P.D.
https://digital.darkhorse.com/genre/230/