The banks and the banking staff here are so frustrating. You can sit there waiting while they have a conversation between each other. No such thing as quick service.
Once you reach Nakhon Ratchasima look for signs to Khon Khen once you reach Khon Khen you can't go wrong. Try get some information regarding the flooding.
I am the Author of this post, the reason i made this post was to get some idea of cost myself. That said, seems very expensive to me. About 900 pounds a tooth.