E-junkie: Shopping cart or Buy Now buttons through Google Checkout
You may use Google Checkout Buy Now or Shopping cart buttons with E-junkie to enable your customers to pay using the Credit card associated with their Google Checkout account. You will receive payments into the bank account associated with your Google Checkout account. There is no setup and monthly fee for accepting payments through Google Checkout, the processing fee is 2% + $0.20 per transaction.
2. Inside your Google Checkout account go to Settings > Integration.
Copy your Merchant ID and Merchant Key - you will need to enter them in your E-junkie profile.
Enter https://www.E-junkie.com/gc/ResponseHandler.php in the API callback URL field
Set the Callback method to XML
Press "Save Settings" button.
Select "Automatically authorize the buyer's credit card for the full amount of the order" under Order Processing Preferences.
3. Then in Settings > Preferences > Order Processing Preferences select "Automatically authorize the buyer's credit card for the full amount of the order"
4. Within your E-junkie account go to Seller Admin > Edit Profile > Selling with Google Checkout enter your Google Checkout Merchant Key and Merchant ID.