Ill walk you through it modee because I use this same shopping cart with my ebay account. Iv been using it for 1 year now, sorry took me so long to bring it up..lol
1. Create a trail account
2. Once you have a trial account, log in with your user name and password
3. Look for "payment gateway settings" on the right hand side click the link.
4. Then scroll down to the bottom of the link and look for "Type of order transaction allowed" you will see "By Credit card with real time processing" and "google checkout" box then check the box. Make sure you click CC real time processing box also, this allows take orders in real time from ebay.
6. Once you check that box the google box the shopping cart will ask you for your "Google Merchant key" which is that long string of numbers also if u can't find your merchant key the link will give you directions to locate it inside of google.
5.Enter your google merchant ID and your google Merchant key it also gives you the option to select if you want your google icon small or large ect, and default shipping.
6. Click save at the bottom
INTERGRATION
1. Scroll to the bottom of the shopping cart options on the left side
2. Click Extra Features
3. Scroll down to ebay auctions click the link
4. Then click ebay sign in, input your ebay SN, Now u have authrization.
When someones wins a auction on ebay. your shopping cart will automatically send them a invoice to make payment from google checkout
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