"You can’t buy devices on Google Play in the following regions:
Hong Kong: Sha Tau Kok, Ta Kwu Ling, Man Kam To, Mai Po, Lok Ma Chau, Closed area, Lo Wu, Po Toi, Tung Lung Chau, Grass Island, Crooked Island (Kat O), Tung Ping Chau, Mui Wo, Lamma Island, Peng Chau, Cheung Chau, Tai O, Lantau Island"
I wonder why...