Google Play Gift Card (US) face value of $50 USD for a US account (USA).
You get the code instantly after payment.
Activate computer code:
1. Sign in to your account at
http://play.google.com/redeem or create a new one.
2. Enter the card number and click Activate (Redeem)
Activation from an Android device
1. Open the Play Market app.
2. Click "Activate Promo Code" (Redeem)
3. Enter the code and click "Send"