Hong Kong has some of the lowest postage rates in the world. When I lived in Japan, there were a lot of direct mail advertisers who printed and shipped from Hong Kong.
If he gets one, I guarantee he’ll love it. Effortless for the human, & gives the dogs a great workout. [I’ve bought jewelry from Hong Kong, & I wondered how they managed to ship it so cheaply. Thanks for answering that question while you were at it.]