It has about right at 6 months of use on it maybe just a bit more. I started my tank back in August, however didn’t add the chiller until the cycle was complete. I bought this for $350 (plus shipping of course), and I did a search and found it the cheapest at Amazon.com for $315.00 + shipping.
$280 + Shipping OBO. I think this is a honest price. However I will consider offers. I'm a bit nervous bout shipping, however, I will pack the heck out of it, or pay them to pack it on my expense.(mainly to insure that it will arive in perfect condition. I will include the pump used with this, which is the MJ1200.
PM me if interested or with questions.

Info:
On Current’s Website:
http://www.current-usa.com/primechillertower.html
Online Info:
Description
Highlights:
• The Ultimate Stress Reducer—The Prime Chiller will keep your tank buddies cool on those hot summer days. The small compact size makes it easy to fit almost anywhere.
• Heat Removal Machine—Super quiet, energy-efficient, high BTU compressor delivers more BTU`s than any similar size chiller on the market—providing more cooling power requiring less electricity.
• Intelligent Design, Inside and Out—Corrosion resistant, titanium heat-exchanger offers the peace of mind you want out of a chiller. Integrated dual-stage temperature controller controls both the chiller and an external heater up to 300w (heater not included). Rubber feet eliminates vibration noise. Cool features, with capacity to spare, make this the Prime candidate for your cooling needs.
• What`s Included—Each chiller includes an integrated dual-stage digital temperature controller (temperature range 60°–80°F), 1/2" and 5/8" inlet/outlet barb fittings, 6ft power cable and instructions. Both 1/15 & 1/10hp chillers use safe R-134A refrigerant.
Note: Accessories such as metal halide lighting, submersible pumps, etc… can add a great deal of heat not considered in the above chart. Decrease volume by 25% to determine the horsepower needed to chill that amount of water.
• Horsepower: 1/15hp
• BTU: 750
• Volts/Amps: 115V/1.6A
• Flow Rate: 300-600gph
• Thermostat Type: Dual
• w/ Thermal Expansion Valve: No
• Dimensions: 9.5in x 12in x 11.5in
Pump(s) or some way to circulate water through the chiller are required and sold separately