Quick Shopping Cart is a certified eBay listing tool. To list your products and services on eBay, you must sign up with eBay and secure an "Authentication Token" that is used by Quick Shopping Cart. This security measure is required by eBay and serves two purposes:
To list your products on eBay, you must have an active eBay account. If you already have an account, you can use it for listing your products. If you do not have an eBay account, you have to establish one during this process.
Once the token is authorized, the eBay website closes and the Quick Shopping Cart eBay Auction Manager page opens. From this page, you are ready to start listing your items and selling on eBay.
For additional information on this topic, see Listing an Item on eBay.