I have a nearly-new LG Ultrafine 5K Monitor for use with macOS devices for sale for $950. Currently available for $1,299 from Apple. https://www.apple.com/shop/product/HMUB2LL/A/lg-ultrafine-5k-display

This was purchased in Jan 2020, has no scratches, missing pixels, blemishes, and works perfectly. In addition to the stunning 5120-by-2880 resolution, it has a built-in HD webcam.

I purchased this for use with my mac in my home office but have since changed jobs and use a Windows computer and it is not compatible.