My app seems ready to get a \'real life\' test for an in-app purchase procedure on my device. However, I receive an \"The publisher cannot purchase this item\" error message in
A developer cannot purchase anything from herself. To fully test, you will need to create a test account in the Developer Console and then install your app on a device where that is the primary account. There is no other way.
See http://developer.android.com/google/play/billing/billing_testing.html