Welcome to the expat forum, anthony.

The answer to your question depends on a lot of different factors. In five months I spent in Thailand this past winter, the baht went from 37 to the dollar to 32 to the dollar. After I left, it gained again, and for a brief time it was at just under 30 to the dollar.

Some parts of Thailand are more expensive than others. The beach will be more expensive, Bangkok will be more expensive, etc.

It also depends on how you want to live? Do you want a big western style condo? Or would you be happy with a small room in a guest house? Do you want to go out a lot? Do you drink a lot of beer? Will you want to eat western food most of the time? All these things drive costs up.

And then there is the Thai 'girlfriend' expense.