i think anyone who can drop £700+ on a phone isn't going to miss another £300. some people just have more money than sense especially when it comes to Apple.
i'm not paying £1,000 for a phone and was interested in the X. I could have looked at the iPhone 8 but £700 is still a ridiculous amount of money for a phone and no way am I paying £700 for a phone that looks/performs worse.
There comes a point where people think, which do I use more, my computer/tablet/laptop or my phone? Which is more useful? Which delivers greater productivity? Which am I looking at 3 am, on the bus, at dinner, in a cafe, as I'm walking down the stairs, unlocking the door, crossing the road, watching my favourite shows, listening to my favourite songs, sharing jokes with friends, fixing appointments, checking fitness, wasting hours of time playing games, getting my news, recording my kid's birthdays. You only live once, that time is precious. If you can upgrade the experience during that time many will do so for a week or two's salary.