First, your not actually selling items on ebay to buyers.
You will create listings on ebay with title and description
then include a link to where the original item was purchased,
example: This helped me alot, this is where I purchased it http://www.
Why do this?
This is to drive traffic to my websites where people may purchase the items. Ebay shoppers are more likely to purchase because they are in a buying mode already. This is another traffic source
No money will be exchanged between you and bidders, you can cancel the item before it ends or make it a private listing where you need permission to bid.