eBay Bucks is a free program that rewards you for buying on the site! Once you are enrolled, you will begin accruing rewards with every purchase.
Click My eBay in the top right-hand corner of the eBay homepage. You will see your balance at the bottom of the drop down menu and can click on eBay Bucks to see your activity and more details about this program.
Be sure to review your Communication Preferences and opt in to promotional offers under Promotions and Surveys to receive additional deals and special offers.