$500 Google Cloud Platform credit
price $35 BTC BUY HERE
payment method only BTC

Go to: http://console.developers.google.com/billing/redeem
Then put your coupon following the direction

IMPORTANT NOTICE: You need an active billing account in your Google Cloud to be able to use the coupon.
Coupon is only available for 1-time-use.
One coupon can only be redeemed in one account. So you may get message "invalid coupon" when you try to redeem the second coupon of the same type in the same account.