Just did my Covid extension at Surat Thani Immigration, last year I paid 3000 but they must have thought I was cute this year because they only charged me 1900.
TM.30
Copy of passport ID page
Copy of entry stamp
Copy of extension stamp + TM.30
Passport photo
Was handy to have a copy of my visa for myself
Took 20-25 minutes
TLDR : Answer Summary
The user successfully obtained a Covid extension at Surat Thani Immigration, paying 1900 baht this year as opposed to 3000 baht last year. Required documents included a TM.30 form, copies of the passport ID page, entry and extension stamps, one passport photo, and a personal copy of the visa. The process took 20-25 minutes. There was some discussion regarding the validity period of the extensions, fees charged by immigration officers, and differing experiences among individuals seeking extensions.