[z3r0]

If they have the countries that they don't want to ship to saved in a custom profile field then you could add something like this to the top of your postbit_legacy template (you would need to set the field ID to whatever your field is)

<vb:if condition="$post['isfirstshown'] AND $post[field7]"><div style="border:1px solid #ccc; padding:7px;background-color:#ffeb90;">Not shipping to the following counties: {vb:raw post.field7} </div><br /></vb:if>

I'm assuming the sales post would be the first in a thread and if so the notice would show above.