Yes, I have fallen foul of that GSS as a seller. Sold some of my son’s N gauge so he could start buying OO Irish stock. One item went to Australia via GSS. That’s where it broke down. The courier down under left a missed delivery note and the item vanished. Now clearly I had fulfilled my part of the deal - the item had reached Australia, as the buyer freely admitted. But it was a long drawn out process to clear it up!