|Blocking bidders and buyers
If you don't want to sell to certain members, you can put their user IDs on your blocked list. Members on the list can't bid on any of your listings until you remove them from the list. You can block up to 5,000 user IDs.
You can choose whether or not to allow blocked buyers to contact you about your listings (by default they can't, but you can change this setting by following the instructions in the Setting up buying requirements section
below). Blocked buyers will still be able to contact you about existing transactions, unless you add their user ID to your blocked list.
Note: When blocking bidders, you must comply with any applicable laws or regulations. If you have any questions about your legal obligations, please seek legal advice.
To add a member to your blocked list:
Enter the user IDs of the members you want to block.
To remove a member from your blocked list:
Delete the user ID of the member from the text box.
Note: You should inform members after you remove them from your blocked list, so they can resume bidding on your items.