title: Google Wallet : No forms of payment available
body: <p>I'm new to developing Android apps and some apps of mine are paid.<br>
  5 people have bought my app till now.<br>
  Google Wallet notices that "You have no valid forms of payment available.<br>
  This account has no valid form of payment.<br>
  Please specify a form of payment in order to get paid".<br>
  But when I clicked in "specify a form of payment" then I got the message "No forms of payment available".  </p>
  
  <p>So I wonder: Is it normal?<br>
  How much is the minimum payout amount in order for me to be eligible for a payout at the end of my payment circle?<br>
  I'm Vietnamese.  </p>
  
  <p>Thanks for your attention!</p>