Many thanks for the alert. Unfortunately I get the message 'Sorry, letgo is not available in your country', so I can't see it. However, sending batteries internationally seems to be quite a hassle, with more regulation and costs, so at least for the private individual best avoided.
Hello gmonati. Many thanks for your reply. Judging by how hard I found it was to get a spare battery you should have no difficulty selling yours. I have found one already and now need to see how to close down my request.