Hi, my partner and I are moving out to HK in January and looking at the best options for getting luggage out there. We expect we will need around 5 30kg suitcases in total. Cathay pacific offer 30kg per traveller so this would still leave 3x suitcases. They charge a total of USD$180 per additional 5kg (!!) meaning this would be totally unfeasible.
There are baggage shipping services also such as mybaggage.com which would ship the extra 3 for £160 each (£480) total also.
We are essentially looking for the lowest cost combination of flights+luggage and would really appreciate any insight.