Most of us don't HAVE 800 k to sit in a Thai bank. The alternative is to consult the "agency" inside immigration. For 14 thousand baht, you need not have ANY money in a Thai bank. You only need to show at least 65 thousand baht of monthly income. I got "red carpet" service and an extra three months tacked on to my extension of stay. The best 14K I ever spent. The old-fashioned "bribe conduit" is ready to serve your needs.
Expats are saying "Leave us alone". Immigration is not listening. Bring on the Chinese tourists.