These heaters were used for approximately 1.5 years or less. One of the Jager 300w was used for only a few months. I used the titanium and one of the Jagers to heat approximately 600g of volume with a basement sump which got very cold during the winter. They did the job awesome and was probably overkill. These are cleaned up and in like-new condition. I have the original boxes for the Azoo and Jager's still.
Azoo 500w Titanium Heater - $30
http://www.marinedepot.com/Azoo_Tit..._Aquarium_Heaters-Azoo-AZ60067-FIHTTH-vi.html
Via Aqua 250w Titanium - $15/ea
http://www.petsupplies.com/item/via...ode=GPPETSUP&gclid=CKLrzPT03bcCFck-MgodsSAAjA
http://www.amazon.com/Viaaqua-Watt-Titanium-Submersible-Heater/dp/B001769XXG
Eheim Jager TruTemp 300w - $20/ea
http://www.marinedepot.com/Eheim_Ja..._Aquarium_Heaters-Jager-EJ1111-FIHTGH-vi.html
Azoo 500w Titanium Heater - $30
http://www.marinedepot.com/Azoo_Tit..._Aquarium_Heaters-Azoo-AZ60067-FIHTTH-vi.html
Via Aqua 250w Titanium - $15/ea
http://www.petsupplies.com/item/via...ode=GPPETSUP&gclid=CKLrzPT03bcCFck-MgodsSAAjA
http://www.amazon.com/Viaaqua-Watt-Titanium-Submersible-Heater/dp/B001769XXG
Eheim Jager TruTemp 300w - $20/ea
http://www.marinedepot.com/Eheim_Ja..._Aquarium_Heaters-Jager-EJ1111-FIHTGH-vi.html