According to the Ministry of Foreign Affairs, it's maximum 90 in 180. Although the law stipulating this was rescinded some years ago, many IOs still use this as a guideline for "further investigation". By all accounts they've got tougher since covid.
I agree. Lived here for years, never used an agent. It's each to their own however, some people can't cope with simple tasks, it's the world we live in
OA is great if you're a regular visitor (say every 18-24 months) to your home country. Never have to transfer money to Thailand, never have to do 90 day reports or TM30s, never have to visit an immigration office. Fantastic visa