The $16k is minimum business turnover, not running cost. The tax and pension requirements on $325 per month salary are only about $300 per year. I doubt that the OP would need a residence permit anyway, based on their requirements.
As cyprus123 points out, you can choose expensive options like Regus and you can find an expensive (by Georgian standards) accountant.
I think that UAE can work very well for some people, but costs are higher.