Google Checkout Seller Terms & Conditions 2.2: Seller shall only use the Service to process a Payment Transaction for a Product that is purchased by a Buyer through a legitimate, bona fide sale of the Product. A Payment Transaction may not be submitted for processing through the Service until Seller has: (a) shipped or otherwise provided the purchased goods to the Buyer; or (b) performed the purchased service; or (c) otherwise completed the purchase transaction as mutually agreed upon by Seller and Buyer