I have been looking for a liquid cooling solution for my PC, and at these prices I had to get it, even though I was looking at other brands! I went for the Pro model ($6.90 delivery to 4217). Compared to Umart which has the next cheapest I could find for these coolers.
Performer ($49 + shipping) - http://www.centrecom.com.au/thermaltake-water-20-performer-e…
$80 @ Umart
Pro ($69 + shipping) - http://www.centrecom.com.au/thermaltake-water-20-pro-enclose…
$110 @ Umart
Extreme ($89 + shipping) - http://www.centrecom.com.au/thermaltake-water-20-extreme-enc…
$140 @ Umart
Reviews for these products seem good as well.
Performer and Pro review - http://www.overclockersclub.com/reviews/thermaltake_water20_…
Extreme review - http://www.eteknix.com/thermaltake-water-2-0-extreme-liquid-…
This must be a new version of my Thermaltake Bigwater A80 liquid CPU cooler i bought early last year when i built my Intel Core i5 system. That one has been running fine since it does the job. I paid $79 for it so this price here is good.