Hello all,
As of June 21, 2013, we are seeking some developers who would like to beta test the upcoming Amazon IAP plugin. If you are interested in participating, please contact either David or Charles for more information. They will discuss with you the next steps and help you with the testing process.
Contacts:
david [at] coronalabs [dot] com
charles [at] coronalabs [dot] com
Thanks for your patience everybody. If you have any specific questions, please address it directly to the above contacts instead of posting here, since this thread is already quite long. 
Brent Sorrentino