Not meaning to frighten you too much, this story does have a happy ending...I purchased a 1940's Martin style 0 uke on ebay a few months ago. It was located in Canada, about 120km from where i live in Toronto. It was sent Canada Post and should have arrived in 3 or 4 days maximum. Well... it was lost in the bowels of Canada Post for 6 weeks! Lot's of phone calls and emails and tracking numbers led nowhere, until finally it showed up in undeliverable mail. this is where they can finally open the package to see what's inside.
They opened the box, then the second box, then dug through the packing material. Oh it's a ukulele. Then they placed it on top of all of the packing material, ignoring the second box. Nothing between the uke and the cardboard flap. Then they looked at the return address, prominently displayed on the box and sent it back to the original owner.
As I mentioned, this story has a happy ending.
The uke showed up unharmed at the senders address and he drove it to me in Toronto the next day. So hang in there, it will show up.