Ok, found a few resellers...
There is
this one which is the least expensive at 35.00 Euros ($31.00 US dollars aprox). However it looks like this one doesnt use the metal sleave for the hose and instead uses a blue plastic one... im think it could be replaced with something else... although the innovatek water blocks that were reviewed by (I forget who) used some fittings that didnt work with our plumbing, something about threading I think. That could be an issue for some. Another place to buy it which I think is the same price but shows the metal fitting is
www.overclockingcard.de - the name of this res in german is "Ausgleichsbehälter" So look for that name on that site. The
place that I listed above has them for 55 Euro ($48.00 USD), they also show the metal fitting...
Hope this helps! I think I might order one, im using a 1250 but I dont think it should be much of a problem... Tomshardware also mentions some of the innovatek stuff in one of its waterblock reviews.