USPS Global Express. has tracking and insurance option as well. That would be best. With courier companies...the cost is crazy, altho FEDEX is the way to go with swords. Don't worry. The only snag about insurance is that if you declare the real full value, the buyer will likely have to pay customs duties. Chicken and egg scenario. Most buyers will ask that you underdeclare, which is ok. I'm not in HK, but I've never lost a package shipped to me Global Express or Global Priority.
Daniel, since I love your frontier knives, why don't you test ship a knife to me using Global Express to Singapore, for your ease of mind? I promise I'll return it once I've admired and used it a little...lol.