More than 5 years ago, I bought two 24" 4k monitors from Dell (UP2414Q), with a PPI of ~180 (and sitting over a foot away), they give me a retina experience with my desktop. They were an early product from Dell, so despite great picture quality, they are buggy and have large bezels.

This week, one of them failed. While looking for a replacement, I was expecting the range of 24" "retina" displays to have improved somewhat. Surprisingly, it seems the opposite has happened. Dell no longer make an Ultrasharp range 24" monitor with 4k, everything is now 27".

Although they do make a 'P' series equivalent, it's an old model released around the same time as my original ones, with similar bugs and early hardware (no 4k 60hz HDMI)

27" is sadly too large for me to fit two side-by-side on my desk (and even if they would fit, 27" is too large for my liking).

Now I'm left struggling to find a replacement, I may have to live with downgrading to something like 120 PPI with a 2k (1440p) 25" display.

It's sad that retina really hasn't caught on much in the desktop monitor space, we should really have 3k as a standard resolution for smaller desktop monitors.