1. Log on to your ebay account, 2. go to my ebay3. go to site map at the top right (under the help ) 4. in the middle column under sell go to Buyer Block Exemption List 5. Then click on buyer block under Buyer Block Exemption List 6. It will take you to this page: http://offer.ebay.com/ws/eBayISAPI.dll?BuyerBlockPreferences 7. then go to the bottom, to Buyers who may bid on several of my items and not pay for them 8. then check off the second one Only apply this block to buyers who have a feedback score of __ or lower. And scroll down to 0 9. and then you can also check of the last one Apply above settings to active and future listings.
Unfortunately eBay does not allow sellers to set buyer requirements to block buyers simply because they have no feedback. You can block buyers with a negative feedback score (-1, -2, or -3), but if their feedback score is 0 or above there is no option provided by eBay to automatically prohibit them from bidding on your auction. There was an option a few years ago that you could use, but eBay did away with that when they made their sweeping changes last year (along with prohibiting sellers from leaving neutral and negative feedback). The only way for you to block a buyer with zero feedback is to individually enter their name into your blocked bidders list manually.
When you re on the page where you create your listing, at the bottom in Other things you d like buyers to know , just click on Add Buyer Requirements and you can choose the options.You may first have to click Add or Remove Options and check the box by Block certain eBay users from buying my items.