If you don't care about OLED monitors and still want a 4K portable monitor then here's an alternative for a lot less, while still having good specs including brightness and colour.
Featuring a 13.3" IPS display with 3840x2160 resolution, 60Hz refresh rate, 500cd/m² brightness, 100% sRGB colour gamut, 1500:1 contrast ratio, HDR, 3ms response time, 178° wide viewing angle, dual speakers and an attachable magnetic stand. There's two USB-C ports for display/power and power input, PD passthrough charging, microUSB for power and a mini HDMI port.
A HDMI to Mini HDMI cable, USB-C to USB-C cable, USB-A to USB-C cable, magnetic case and adjustable stand are included.
- Add "Color: GM1303-4k" to the cart
- Apply the coupon BTS12 at checkout
- Further US$18 discount applied automatically
AU$ based on current Mastercard rate, GST inclusive and stacks with cashback.
I get about $181 after discounts but looks like a good deal for a good 4K IPS monitor.