I got one of these on sale at BestBuy for <$200 delivered. It seemed a great value.
Strangely, Lenovo raised the list price since I bought this in Jan by ~$30
I use this as a 2nd monitor for my 2017 macbook pro
the picture quality is good for text. works well for me at native 2k resolution- I can work on two pages side by side. the monitor has a reduced blue light mode which I use all of the time (my eyes seem sensitive relative to others).
picture is sufficient for tv / movie watching, though darks do get washed out, even in monitor's "video" mode
the picture quality is noticeably worse than my macbook's screen (contrast / dynamic range mostly), but it does a great job for my needs and for the dollar, so overall, no complaints here.
one nit to pick, the menu system to change the display modes is a pain. I scroll through menus more than I want to switch between blue light and video modes. not a huge deal, but an annoyance.
build quality is so-so. It's light and cheap, but this comes at the cost of a flimsy chassis. I don't move my monitor much, so it seems okay.
lack of vesa mount is hugely annoying, however if you are handy with hardware, there is a work-around. you unscrew the attachment plate from the stand and screw that to a vesa plate. you will also want to create a metal stand-off (I used nuts) so that you are not asking the plastic cover to be a structural component. if you go down this route, do the final tightening of the attachment nuts AFTER you have clipped the mount into the monitor, otherwise, it will be difficult to get the clip to engage.
this hack makes for a flimsy, but plenty sufficient vesa mount if you only move your monitor occasionally. If you are aggressive with your adjustments, bad things may happen.
the other pain for me was getting the mac to play nicely with this monitor, i.e. get it to display at native resolution. I think this is apple's fault. get the SwitchResX app, and you can sort this out with a little work.