I sent my contracts by Royal Mail service 'International Signed For' for £21 with £500 compensation. It took a month to arrive and Royal Mail were useless when I contacted them to see if it had got lost in transit. Although it got there eventually I was worrying that they'd lost it and didn't want to pay 5000AED charge. Not sure how you could send it for £4, the weight alone would cost more than that to send.