Apple iPhone X is a hard device to manufacture. It took more than a month longer than the iPhone 8 and iPhone 8 Plus to arrive to the shelves and even so initial stock was pretty limited and shipping estimates increased to 5-6 weeks. Yet stock quickly started to improve after the launch and currently waiting times are down to 1-2 weeks. Even the expansion to 14 new markets yesterday didn't do the iPhone X availability any harm, which means one of two things - either Apple has way more units to distribute around now or the demand has sharply declined after the initial hype died...
Source: https://www.gsmarena.com/analyst_iphone_x_availability_improved_due_to_increased_production_demand_still_strong-news-28426.php
