I just went on Amazon and ordered two blood oxygen saturation meters. One for adults and one for kids. Even if Covid-19 never ends up reaching us, that is a valuable diagnostic tool to have available. Especially for $30 a piece.
1. There is evidence that a still normal, but lower-than-expected SPO2 can be predictive of medical issues - https://journals.lww.com/md-journal/fulltext/2018/06220/can_...
But mainly, 2. If there are overcrowded hospitals, having further insight into the severity of the situation seems useful.
I'm tempted (same maker has one for $11) but I don't know how I'd verify the accuracy
1. I checked out all the cheap ones, and Zacurate was the only brand I could find that was under $50 and had actually been properly tested for accuracy.
2. If you buy one from Amazon ("ships from and sold by Amazon.com") or that specific brand from "Beyond Med Shop" (which is owned by Zacurate), you won't get a counterfeit.