DC/Vertigo's weekly sale is celebrating 20 years of the fantastic series, Astro City. Save up to 67% with 79 $.99 singles until 9/21/15.
https://www.comixology.com/Astro-City-Sale/page/8082
Astro City (1995-1996) 1-6, issue #1 is free
Astro City (1996-2000) 1/2, 1-22
Astro City: Local Heroes (2003-2004) 1-5
Astro City: The Dark Age Book One (2005) 1-4
Astro City: The Dark Age Book Two (2007) 1-4
Astro City: The Dark Age Book Three (2009) 1-4
Astro City: The Dark Age Book Four (2010) 1-4
Astro City (2013+) 1-22
Astro City: A Visitor's Guide
Astro City: Samaritan
Astro City Special
Astro City: Silver Agent 1-2
Astro City: Astra 1-2
Astro City: Beautie
Another Bloom County sale from IDW, 50% off the volumes collecting the entirety (except the brand new ongoing strip of course) of Bloom County, Opus, and Outland until 9/21/15.
https://www.comixology.com/Bloom-County-Sale/page/8081
Bloom County volumes 1-9 at $4.99 each
Opus and Outland at $5.99 each
Be careful, because you may own all of these in that past Humble Bundle.