I believe that Apple were using the X as a marketing tool to see how much money people are prepared to pay / pay per month for a iPhone.
Here in the UK, it is around £80 a month on a tarif with £150 upfront if you want the 256GB version which is essential in my opinion. 64GB just doesn't do it in 2018.
That's £2000 over 2 years or £10,000 over 10 years. Crazy to most people. Also £20 extra a month will get you a brand new car - Fiat 500 on a contract hire.
I have the X and two of my friends have BUT i've certainly not seen any other professionals rocking them. In fact the only ones that I do see are on Instagram

I also get 25% off my monthly tarif. I have a rule were i'll never pay more than £50/55 a month for a phone. I have loads of interests and love holidays, eating out with friends, art, interior design, clothes, surfing & biking gear. I spend my money on that AND like to save my money / invest.
It's beautifully made & designed. But, it's the price and the fact that this is something that is used 90% outside of your safe home. In the big cities, it's asking for trouble having this out in public. After being mugged last week and seeing several people attacked since with 20+ cars vandalised, it's really opened my eyes to carry super expensive things around with you. With insurance and Apple care, you're paying over £100 a month - every month - that's 2 or 3 holidays to Ibiza a year asa comparison!
Same with the Beats Pro headphones. I saw a guy wearing them near Camden tube one evening - nobody around, total darkness and these H U G E bling bling things were practically shouting '£400 headphones here, come mug me'.
I remember when we were all horrified with the original iPhone prices and now look

I do feel that Apple have overdone it with their range of new and old iPhones currently on sale. It's a mess. SE, 6S, 7, 8, X and those plus sizes.
Personally, I preferred it when there was just one model in the range like in the iPhone 4, 4S days. People actually got excited about their launches in those days.