absolutely. I have never been even close to that cost to open an account anywhere in the world. Especially not in a country that has a median income of 400 THB a day...
it was the Cambodia evisa.... It just makes it easier and cheaper to have that. Back to Thailand is definitely not a problem if you have a passport with exemption privileges.
And there's scammers that try to make extra visa fees with "helping" you fill in the false paperwork. I saved a group of about ten foreigners last time.... Just say no ..