UK - Japan Postage Rates

Here is a summary of the UK to Japan airmail postage rates for small packages

(from information on the Royal Mail web site). Notes:
 * 1) Valid December 2006
 * 2) Calculated at £1 = ¥228.
 * 3) The actual charges are in 20g increments, but I didn't want to list them all.
 * 4) The surface rates are almost exactly 50% of the Airmail rates, but they are in 50g increments.
 * 5) 2000g is the maximum weight that can be sent by this "Small Packet" service.