Welcome to iMore
The iPhone X isn’t available anymore unless you get a good deal on a used one either on the market board or some place like eBay
The Xs is it’s replacement or you can just keep your 8
If you know how long will the iPhone X still get the Apple updates?
Opinions please. Should I upgrade to the iPhone X or Xs? or keep my iPhone 8 Plus?
Do you have to "follow the Jones'" and get the latest and greatest, or is your current device working ok? Do you like the home button and touch ID or do you want to make the jump to pin and face ID? Is your current device paid for?
Lots of things to consider.