It's trivially easy to find a really nice space to rent in the USA for $500 or so. The catch is you'll still be doing all your own cooking and cleaning. And you'll be surrounded by hicks.
Now of course, you might be able to only afford to go to socialize at bars and restaurants once a month or else you'll blow that budget, but it's possible.
http://www.mfa.go.th/main/en/services/123/15388-Non-Immigran...
I believe you will need a business visa to legally work here (I am a Thai national so I do not have that issue) and getting one isn't a trivial task, unfortunately.
I suspect that the OP is most likely working using a tourist visa. IANAL but it is likely not legal if caught, but if you can get away with it, more power to you.