Sellers are permitted to block users from bidding on their listings per his/her discretion.
How to Block A Bidder:
To block the current high bidder from placing future bids, view your listing when logged in to your account. Click the "Block Bidder" button.
NOTE: Blocking a bidder only prevents future bids on the item; it does not retract current bids the bidder may have placed or prevent them from being named winning bidder if they are not outbid.
To block any bidder from placing future bids on any of your listings, you can add the user to your blocked
bidder list. When logged in on your dashboard, follow the steps below.
Select "Toolbox" form the Menu.
The select "Listing Tools"
You can also view or edit previously blocked bidders on this page.
Note:
Bidders blocked with a date of 1/1/1998 are bidders that were blocked in the system prior to the change that started tracking the date they were blocked. Originally when we had blocked bidders in the system, we did not have any dates associated with them. A number of years ago when we changed the block bidder structure and decided to start associating dates with the action, we needed to assign a date to all bidders that were blocked prior to the system update. As a seller, if you see a bidder with a blocked date of 1/1/1998 this bidder was blocked when the change was implemented.