I have been doing soom numbers crunching, and it is my estimate that it would depend on what part of the country in which you live. I believe a small distillery with a capacity of 150 gallons a week could be done with a budget of 50,000 to 75,000 thousand dollars easily. This would be, if you have building skills, and metal working skills and a working knowledge of the formulas that you will clear throught the TTB.
I think it could be done for less, but some here think the only way to do this is to buy a 200,000 dollar still.
I am in the process of getting everything together at this point. Three teir states like GA are the most expensive. Good luck.
Wilder