title: What is Admob In-app Purchase ? How to use it?
body: <p>Can anyone tell me what is admob in-app purchase and what is the difference between admob in-app purchase and Google play in app billing ? Are they different ? </p>
  
  <p>because i want to use in-app purchase to sell some items on my apps games like extra coins or levels etc. </p>
  
  <p>I can't make a google wallet merchant account from my country so here i want to use in app purchase to earn some good revenue but i didn't get any good tutorial regarding admob in-app purchase. i heard about google play in-app billing but it requires merchant account so i am interested to know can i use admob in-app purchase to sell some extra levels in my games but how can implement admob in-app purchase in my app.</p>
  
  <p>i read a tutorial from google site but i didn't understand it. i'm interested to know is there any better tutorial available to learn admob in-app purchase and how to implement ??</p>