Question Looking for a 2nd basic monitor for wall-mounted Extended Desktop use ?

[Stealth3si]

My nephew already has a main monitor (MSI G27C4) for gaming. He is looking for a 2nd monitor for general desktop multi-tasking use. Nothing fancy, just a basic 1080p 60Hz monitor with wall mount and DP or DVI-D input. He plans to use it for things such as Discord, YouTube, etc while he is gaming on his main display.

His budget is $100 or less.

One example I found is Acer K242HQL on ebay. It is open box like new condition for $100.

Any other good suggestions?

 

[popatim]

For things like a monitor, I want someplace to take it back to and get a replacement for within the hour. If it's from a reputable seller and he won't be impatient having to return it if there is an issue (it's open box after all) then it sounds like a good deal for a 24".