It appears that you received this error because you selected the “Use eBay's domestic shipping rate table” option within the Shipping Tools section of the listing, but had not yet created a domestic shipping rate table within your eBay account.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .