Your In-App purchase (IAP) for IOS architecture, design, and best practices.

Trying to find information on the architecture, design, and best practices using AIR/AS3, and Flash/Animate for app deliver of content via an in-app purchase (IAP) on IOS. I have been reviewing the IAP ANE by Milkman but would like to understand your experience of delivering the content via movieclip, swf, or swc, that is embedded but locked in the app bundle and how you have handled "unlocking" the content. Any other methods you have used to deliver the content with any comments on pros and cons would be appreciated. If you have any examples that explain/demonstrate the whole process, end to end, that I can view would also be appreciated.