You might want to check with legal professional regarding the COVId extension. Last time I check lawyer told me that COVID extension is same as no visa but have some permission to stay in Thailand. Once you exit from Thailand (visa run) you might need to apply for a regular visa (of any type). Therefore even you CAN find a way to Laos or Cambodia, Thai embassy might not “renew” your ED visa
I went back to the link. You are correct that there is no TR option. I also test. It looked like price depends on the country (or risk of country). China and Australia are 3840, Germany 6400, USA
I don’t know the difference is because of price change or country you are from. THB6,400 is relatively cheap. From my previous experience, I know Hong Kong embassy will only issue me work permit for 3 months. You can call it temporary work permit. Within the 3 month I need to extend the visa to a year in Thailand. Theoretically speaking after 3 months I need a health insurance and COVID insurance to extend my work permit. But I am pretty sure can get one in Thai cover both.
One more thing. Your employer might get info that WP3 is not issued anymore due to the COVID. That is not true. Hong Kong embassy confirmed they received application with WP3 since July.
I am on a work permit and arrived last Sat. Still in quarantine hotel. You need to ask your employer to get you a WP3. WP3 can get you a visa. Once you have visa, together with COVID USD100,000 insurance, ASQ hotel confirmation and air ticket, you can get COE in about 14 days. (If we arrange the flight ourselves, only 7 days. If you take the repatriation flight 14 days)
Visa is HKD600. Insurance is THB3,989. ASQ hotel ranges THB36,000 to THB72,000. Air ticket you find out. COE is free.
(HK is low risk country. Not sure whether the detail are the same in Germany)