Well I toss this out just for shits and giggles.
1 keg=35-45$ from local scrap yard
1 copper 2" tube=40-50$ local scrap yard
copper 2" ferrules amazon 23-25$ ea
5/8" ID soft copper tube 70$ Ferguson 50'
55 gal food grade drum 35$ Craigs list.
Blichmann Hellfire burner 150$ I can boil 20 gallons of h2o in less than 30 minutes.
I'm not going to argue or debate on others opinions but I'll tell you what I do and what I get.
I make 45 gallons of mash/wash at the time for 3-12.5 gallon stripping runs to get enough low wines for a proper spirit run.
On average I'll retrieve 60-70% of a spirit run to age a 5 gallon barrel and have some left to sip while the other ages.
My spirit runs are normally 13 gallons of low wines.
Everyone will have an opinion but it simply comes down to what you want to make, whiskey, brandies, rums are all best on potstills.
Vodka, gin and neutrals will all be best on a reflux colum. Then you'll have to research on what kind you'll want/need to accomplish your goal.
On another note, once you buy from a commercial dealer, your name, address and your personal information will have to be forfeited to the TTB upon request from them to the supplier. I personally would not want to looked at for buying a still that they pretty much know I'm not making essential oils with.
I'll end with this, if you have time and some minor skills...build your still.
I get alot of satisfaction knowing I built mine and it works flawlessly and it makes great likker.