https://www.theverge.com/circuitbreaker/2017/10/27/16556934/iphone-x-screen-repair-costs-out-of-warranty

The iPhone X went on sale today, and with it, Apple released some information about the phone’s repair pricing — and like the phone itself, it gets expensive. If you don’t have the extended warranty, a screen replacement will cost $279. That’s more than twice the price of an iPhone 6 screen replacement ($129) and about 65 percent higher than a new iPhone 8 screen ($169). The pricing was first spotted by MacRumors.

If that sounds high, you should be careful not to damage an iPhone X in any other way: all other out-of-warranty repairs will cost $549. Again, that’s a lot more than what other recent iPhones cost to repair. iPhone 8 repairs cost $349 and 8 Plus repairs cost $399. That means if you crack the glass back of the iPhone X (or the iPhone 8), you might just want to live with it.