Add in-app purchase to existing app - needed fast

I have the binary for an app It has a list of videos that are free I want to add in-app purchase for each preview video (to buy the full video) all videos are streaming from url at amazonS3 server and sharing functions (facebook, twitter) are not needed I can provide the binary, the redfoundry code, and all designs please let me know the cost to do this, and time please include code word "carrots" in your reply, otherwise, I will not read your bid reply. and please include LINKS to apps that you have completed.