If you visit Singapore telcos (SingTel, StarHub, M1) physical store, you will see a signboard listing availability of iPhone models. For the past many years, the stocks for new models are generally "Not Available" during Christmas shopping season. So to buy iPhone at telco store during this period, you have to queue up before the store open in order to get the daily limited units released for sale. I just visited telco stores in a busy shopping mall this evening, and all of them listed iPhone X as "Available" for all color and memory size. This is clear sign that its not selling as well as expected here.