Booze is expensive here in NZ - bottle of premium (locally made) 42 below costs around $50 NZD (for 700ml with flavour, or for 1 litre plain). Ergo, if I can produce a high quality spirit for $6 to $8 a litre at the same %, it's a boatload cheaper for me. Plus I can get rid of the crap chlorine taste of Auckland city water!
I hear that the perfect range is 86-92 degrees celcius, but don't quote me on that. The still will definetely have a thermometer built.