What are the current options for expats in Thailand looking to extend their stay during COVID-19?

and Good luck with that plan, it seems workable but there's NO one on this site who is gonna tell you IF it will work or not..

In theory it can, BUT in practicality will it? Who can say,

Sincerely good luck with it (y)

Try safety wings or world nomad insurance

When does your current entry stamp expire, and have you extended that entry stamp yet at the immigration office for 1,900THB?

>Expensive way but should buy some time and seems most workable.

It seems workable.. *TODAY*. We do not know what will happen tomorrow. I don't feel comfortable giving advice for things that may happen a week from now.

If there are flight to return to your home country, I suggest returning home and applying for a long term visa at the nearest consulate where you reside. If there are no flights, then you can contact your consulate or embassy and request for a COVID-19 to be issued, which can be used to get an additional 30 day extension of stay.

I read somewhere Chulalongkorn hospital have cheaper tests. If you have Thai Bank account some offer inexpensive covid-19 insurance. SCB have for less than 300 THB.

Covid 19 health insurance... unpurchasable ?

I suggest pause...lets see whats being accepted at airports, borders and Thai Immigration.

Avoid the costly test...for a few days.

Depending on your circumstances you might be able to get a letter from your embassy to allow extensions based on extraordinary circumstances

I assume you mean the Covid19 health insurance? General health insurance is always a good thing too but you don't need it to get a non-O visa if that is what you are planning to do.

Good luck. Let us know how all of that went please.