Q: How do I return an app I just purchased?

A Mac app or an iOS app (Apple was really, really stupid using the same name for both)?

Contact iTunes Store support staff through the report a problem links in your account history or,

iTunes Customer Service Contact - http://www.apple.com/support/itunes/contact.html > Get iTunes support via Express Lane > iTunes > iTunes Store - Apple states all sales are final, but you can always ask nicely.

post by stevejobsfan0123 - https://discussions.apple.com/message/18879347 - "In the iTunes receipt which will be (or maybe already has been) emailed to you, click on the Report a Problem link.

Mac App Store: Frequently Asked Questions (FAQ) - http://support.apple.com/kb/HT4461

What is the Mac App Store refund policy?

If you experience a technical issue with an app, first contact the developer of the app for assistance. Their support contact information can be found on the app's page in the Mac App Store. If that does not resolve the issue, contact Mac App Store Customer Support. https://www.apple.com/support/mac/app-store/contact.html