We've just had our 100th delivery from Boeing, a 747-8F, this flew to YVR, not for tax reasons but to pick up freight to take to HKG.
Our 777's fly direct from PAE to HKG, money and title transfer takes place in the morning, CX engineers then go off and add our required bits before flying off to HKG with numerous VIP's!
I attended a dinner in the musuem of flight, rather nice, and another time on a boat around Seattle sound less formal but better.