We have used East Asia Movers Hong Kong, 4 times so far, which in my opinion, charge very fair prices. http://www.eamovers.com.hk/
We were recently charged $6000 ( a large 4 bedroom home worth ) including about 50 large cardboard boxes, a big/full roll of 1 metre wide bubble wrap, 20 rolls of tape, wine bottle inserts and a number of clothing bags, delivered 2 weeks prior to moving day. They moved our entire house in a day and were finished by 6pm..
Ours was a fairly major move, so reckon it will be pretty hard to beat, it even included moving a fair amount of outdoor garden furniture, a large BBQ, sun umbrella's, and 3 Christmas trees ( douglas furs )
Not sure if they will supply boxes to non moving clients, but it cant hurt to give them a call on 2958 1233