I have configured an Android application to use the in-app billing module as documented at: http://developer.android.com/guide/market/billing/index.html
It works fin
Update:
Inappbilling library 1.0 just released to make this easier.
Kumar Bibek has already answerd above: Still I am giving an explanation:
Hardcode the following debug options in the launch purchase flow to get the desired output.
android.test.item_unavailable*
mHelper.launchPurchaseFlow(Activity.this, "android.test.purchased", 1000, mPurchaseFinishedListener, payload);
The above will give these screens:
On clicking Buy.