Last week I read in Chinese health ministry reports that during the Year 2004 SARS virus episode
it was found that the old cheap Malaria drug Choloroquine Phosphate
( typical price overseas 4 USA cents per 250 mg pill)
helped SARS patients recover.

The Chinese were now reporting that COVID-19 patients were also doing better when given cheap Chloroquine Phosphate pills.

I decided to order 30 tablets from Costco Pharmacy,
which almost always has the cheapest USA drug prices.
As a Malaria drug very few US drug stores keep this in stock and Costco said they would have to order it from the warehouse and could not yet tell me a price.

I just called Costco Pharmacy to check.
Costco said it was still on backorder with no firm delivery date.
Costco said they did now have a price:
$501 for thirty tablets !

Supply and demand?

Mail order United Kingdom pharmacies are quoting $48 for sixty 250 mg pills.