Thank you for the trouble you have gone to Gary; that is most helpful. My initial thought was it's a scam, then I changed my mind but after posting I am back to having gut feeling that it could well be a scam.
I'm an experienced buyer/seller but have got stuck with a sale (now two weeks ago). The buyer emailed me a few hours after buying to ask for payment instructions, I sent them via tm (plus an email to advise) shortly after. Four days later buyer emails to say can't find them in tm. I sent a link using payment instructions from something I won - changed the p number (minus p) - and have since heard nothing. Judging by sign-off in messages they are using trade me mobile so I'm wondering if the problem may be difficulty in finding payment instructions on mobile. I have already had refund of s/f...