Im in the process of building an externally kept water cooling unit. Bought a 8x8x4 weatherproof box from work, a statuary pump 454lph, some brass fittings and some clamps. Got the radiator from dtekcustoms out of the scratch and dent section, 120V 120MM fan from allelectronics that pushes 130CFM. All this just so I can do a watercooling project on a video card soon. Im going to use the swiftech MCW50-T. If you just count the external box and tubing, I probably spent roughly 100 dollars. I just cant see spending 200-250 bux for something I built for half the cost.
Btw, thanks to all the people that help me track down the 120V 120MM fan. Was getting worried I wouldnt find one!