Can't get decent liquid cooling for that price. any units that cheap will perform worse then air coolers. I would buy a Xigmatek dark knight 2 hawk edition.
Youd be better off with a large air cooler in your scenario, as it will suit your price range much better, something like a Phantkes PH-TC14PE or a Noctua NH-D14 should be able to handle a 3570K at 4.5Ghz