The postage calculations are not functioning properly. 250g items are coming up as $14.95. 500g is the same, 1kg is the same, 5kg is also $14.95. This is for myself. Spoken with other EBay sellers and  they are having similar issues but also different, still to do with postage calculations being wrong. Postage changing after listing has gone live from paid to free. Double check your listings and postage costs.