If your from the US, passed 50 years and don’t want to bank 800K baht in a Thai bank, you can apply for a one year Non O-A visa through your embassy at home. This gives you up to two years in Thailand.
I don’t have an overview, but at least they introduced the financial requirement of 400K baht seasoned for two months during last spring for Non O visa based on marriage. And you only get single entry as an e-visa as Graham states.
You can apply for an extension on the same condition as for a regular Non O, but the mandatory health insurance requirement will follow for all your future extension of stays.
Er du fylt 50 år og har en inntekt tisvarende minimum 66K baht kan du enkelt oppholde deg i Thailand. Greieste er å søke på et 90 dagers Non O visum online før du reiser og deretter extension of stay ved immigrasjonen i Thailand med inntektsbekreftelse fra ambassaden i Bangkok.
Probably not, same happened to me with only one savings account in the same bank as my debit konto still was active. They demanded a long stay visa for reopening this konto again.
You can as an example get a ticket from Don Muang - KL at 35 USD. A tourist visa is normally 35-40 USD and it’s formally not excused from onward ticket requirements.
You can alternatively call your airline and ask for their policy regarding this. There’s also websites offering only bookings at 15-16 USD. Google onward ticket.