Here is a AOC 4k 60Hz IPS monitor with G sync.
https://www.newegg.com/Product/Pr…-_-Product
I know a lot of people would like to see above 60Hz on a 4k IPS monitor, but there are none yet. From what I know Asus and Acer have something coming soon but word on the street is they are going to be $1600 to $2000. So I picked this up figured I would share.