all those 10k quotes - you are making it up as you go along. Stop spreading the wrong information to people. It has NOT been confirmed yet that the extension is 10k. Upon re-entry, you do not pay another 10k.
So why did the Thai PRD use the wording - "3) Introducing the new Destination Thailand Visa (DTV) for long-term travel, “digital nomads,” and participants in certain cultural activities, with a period of stay up to 180 days per visit, on a multiple-entry basis within 5 years;"? Link :