I've quickly called into work and don't have time to sit down and look at this just yet. I've got a big pile letters from Royal Mail and several PDFs to read, but is a 500g mug posted to the USA about to cost £14.88 and an RM48 £4.74?
They never give details stating IE1 code will cost you x amount, you need to rely on your OBA account to give an actual cost.