If you don't already have a monitor at home it's because you don't want one. So it doesn't make sense to spend $500 for something you'll use in a temporary WFH situation, then lose money getting rid of it once WFH starts. Much better to just bring the work monitor home for the duration of WFH.

Incidentally I do already have a monitor at home, that costs more than $500. And I'm not using it for WFH, because I find my 15" work laptop sufficient.