Our least expensive in our:
15.5 gallon pico-Fermenter it is a bung style keg that has been converted to a
fermenter.
The tap has been removed and a plug is inserted in the tap hole.
The keg is laid on it's side on a PVC stand and is fitted with an airlock &
stopper - all included.
Perfect for 10-12 gallon batches.
This unit is available from stock and sells for $75 plus shipping.

This fermenter is all stainless steel except for the removable airlock &
stoppers and plug. I normally soak the fermenters clean with a hot caustic cleaner (dish washing detergent). After a good rinse I sanitize them by adding a gallon of water and put them on a burner to boil for about 20 min. I then dump the
hot water - invert the fermenter over the burner or the fermenter stand and
allow to cool. If I am in a hurry the outside of the fermenter can be sprayed with
cold water to speed cooling. The airlock and stoppers are soaked in a sanitizing
solution. With our system we use the pump on the brew kettle to fill the fermenters and racking cane and syphon to drain them.
 

We also build custom conical fermenters. This 18.8 gallon unit is 16" dia.
x 38" h. is a single shell tank with 3 legs, dual valve assembly with sanitary 1" clamp fittings, C.I.P. arm, blow-off fitting, airlock and thermometer. This unit sells for $2049.00.

A similar 18.8 gallon fermenter that is 54" tall and has 3/4" garden hose
fittings in place of the sanitary clamp fittings and is fitted with
a glycol cooling jacket for $2399.00 and a glycol cooling unit for $1299.

.5BBL Jacketed Fermenter - not insulated, 15.75" Top Manway, (3) Legs, #2
Stainless Exterior, #2 Interior with #4 Welds, Adjustable Racking Arm,
16.5" Dia. X  40" High to, 18.5 Gallon, Side 15 PSI Jacket, 70 Degree Cone, (2)
T' Wells, 3" Thermometer, Blow-off Assembly, 1-1/2" Cap, Airlock & Stopper,
C.I.P assembly, (2) 3/4"  Ball Valves, (2) Clamps, & Gskts - 150#  -- $2399.00
Pressure assembly (gauge, relief, inlet (either ball lock or pin lock) ) -- $120

This unit is shorter that the one in the photo and can be shipped UPS (~$60
each)- the taller unit must be sent by truck (starts around $200)

A glycol system can be provided with the fermenters.
Glycol Refrigeration unit - 1/3 hp - 1 circ. pump - 10 gallon holding tank
17wx25dx28h - 180#  -- $1299

1" or 1.5" Tri-clamp fittings can be added for $40 each (including clamp &
gasket).1" butterfly valves are $85 each including clamp and gasket.
1/2" ss ball valves and elbows are $52 per set. - makes better control
valves.

Delivery would be about 4-6 weeks.