Sequential gets into the summer sale bandwagon with over 350 collections at 50-90% off.
http://www.sequential.cc
Dark Horse has an as-of-yet unannounced sale on nearly everything. Prices are pretty much the annual sale prices, with non-current singles at $1 and $5 collections. Not sure if there are any discount codes.
https://digital.darkhorse.com/browse/
Huge Marvel sale at Comixology on Infinity singles at $.99 and twenty new collections at a steeply discounted $5 each.
Infinity main event - 24 singles
Infinity tie-in issues - 31 singles
https://www.comixology.com/Infinity-...Sale/page/7360
That Comixology Dark Horse sale I posted yesterday has expanded with 64 additional collections at 40-50% off.
https://www.comixology.com/Dark-Hors...Sale/page/7297