I have this, from seven years ago. May include dead links. If anybody has edits or additions or deletions, I'll gladly update the list.
http://www.researchandmarkets.com
http://www.marketresearch.com
http://www.abiresearch.com
http://www.vgchartz.com
http://www.gamesindustry.biz
http://www.gamasutra.com
http://www.alexa.com/siteinfo/bigfishgames.com
http://www.joysticklabs.com/the-quest-for-the-missing-app-data
http://www.appannie.com/
http://mashable.com/2013/10/08/state-of-paid-apps/?goback=.gde_113121_member_5793998416031797252#!
http://hitboxteam.com/dustforce-sales-figures
http://www.coldbeamgames.com/3/post/2012/11/november-26th-2012.html
http://forums.tigsource.com/index.php?topic=35689.0
http://www.pentadact.com/2013-06-18-gunpoint-recoups-development-costs-in-64-seconds/
http://steamcommunity.com/app/208600/discussions/0/846954921840332963/
Two case studies:
http://mikengreg.com/blog/2010/10/2-months-of-solipskier-app-store-sales/
http://struct.ca/2010/the-story-so-far/
Mobile:
http://mashable.com/2011/02/24/mobile-app-dev-cost/
http://communities-dominate.blogs.com/brands/2010/06/full-analysis-of-iphone-economics-its-bad-news-and-then-it-gets-worse.html/
https://www.appannie.com
http://www.grabanalytics.com/