Not too sure about Listawood and international shipping. Maybe a Listawood rep will be along soon to enlighten you.
As for the Signzworld mugs on ebay I'd say forget it. These are similar to the mugs I bought when I first started in sublimation and, although I managed to get a reasonable print on them, all my samples at home have faded badly in the dishwasher, yet the Listawood samples are fine. Also, I had a lot of unacceptable mugs from ebay, with dents, chips, marks and very uneven surfaces, resulting in a fair bit of scrap. I've yet to experience a bad Listawood mug and no, I don't work for
Listawood, in case you were wondering!