So I was bored and interested in how people are reacting to this via "last minute prepping", so I did some Amazon and other searches to see what people are making runs on and what the pricing changes are. Some interesting examples:
Auguson Farms, mentioned above, is out of stock on many items and have a notification that they are dealing with very high volume and asking for patience in lead times. They seem to have their normal prices though, including ongoing sales.
Masks/respirators are all over the place. If you do an Amazon search for "coronavirus mask", you have the opportunity to buy a $2 N95 mask for $30. Or I saw a five pack for $45 plus $45 shipping. On the other hand, if you change your search parameters to something like PPE or farm protection or hazmat cleanup, you could actually get something more useful than just a single mask like this cleanup kit for $17:
https://www.amazon.com/DuPont-Multipurpose-Cleanup-Kit-Polyethylene/dp/B07SQ499NM/ref=sr_1_25?crid=1EGI36JU7NK24&keywords=tyvek+suit&qid=1582465164&sprefix=tyvek+sui%2Caps%2C311&sr=8-25Or again, since the paper masks are really questionable for most people, since they won't wear them correctly, you can still get half face respirators with something like P100 filters (again ,geared towards construction, farming, etc.) for like $25, which is normal pricing (for now) and they are, IMO, more likely to be properly worn by dummies, if only by accident.
Then if you look at real respiratory protection - i.e., gas masks, regular people don't seem to have discovered them yet. Israeli military and civilian gas masks are still going for their normal prices of around $75 for unused from a reputable dealer. Or, if you, according to PewPewPew Tactical, want one of the best civilian masks on the market, you can still buy a Mira (Texas, USA) CM-6 or CM-7 with one cartridge for around $275, which is their regular price. Though they have a message on their website that their current lead time is 4 weeks.
So it's seeming to me that for your general, non-APS public who don't think past today and don't even keep a first aid kit or fire extinguisher in their house, they are going to places like Amazon in a panic and being treated accordingly regarding prices for often crappy stuff. I even saw plain old dust masks for outrageous prices using the "coronavirus" search, which shows you might want to use creative searches to get the same thing for a normal price.
On the other hand, it appears people familiar with preparedness (not just SHTF, but natural disaster, etc.) who are feeling "under-prepared" are hitting those preparedness oriented sites, and while there might be shortages or long waits, those vendors don't seem to be taking advantage and jacking up prices.
This is occurring during what IMO, is not yet (and may never be) panic time in the US. This seems more like people saying, "Hey, this might get serious and I should have had stuff before, but I'm going to buy stuff now for just in case." I'll be curious to see how it evolves if things here in the homeland get more serious.