I'm an English teacher living in Taiwan and would like to purchase a 2019 customized iMac from the online store. They show up, but only with a "please look forward to the release date" message. I find this odd because new, customizable 2019 iMacs have been available in the Japanese, Chinese, and Hong Kong stores since launch (or close to it). From others' experience, is this lag in release normal? Or is Taiwan unique? And are there other options for purchasing in a foreign market? Thanks!