exactly, you can show it in your own country..it doesn't need to be held up in a Thai bank account. I wasn't giving a definitive answer, I was suggesting an option not knowing their full circumstances. I, personally, don't understand the antagonism towards the o-a, because of the need for health insurance. If you've
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0 baht that you can leave dormant in thai bank account and have great insurance,.then all.well.and good. That's not an option for everyone though
also, the op is concerned they'll have issues converting from current visa. If they're granted an o-a in home country then they'll already know there is no issue
If you've just turned 50 you may be best to leave the country, get an o-a visa which requires 12 months health insurance in advance but isn't too expensive if you've only just turned 50. You need to show the equivalent of
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0 baht in your native account. You can then start sending the required monthly amount from abroad to a Thai bank account so you can then go to an O visa the next year (or even the year after, as a multi entry o-a can get you almost 2 years if you border bounce at the right time, and then you won't need to have
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0 tied up in a Thai bank account, as long as the required minimum monthly transfers have been adhered to