If you take a look at pricewatch.com there are cheaper versions of Kyro II that are just as good as that Hercules 4500 Kyro II. There's a INNO3d Kyro II 64mb and a Apollo Kyro II 64mb on pricewatch for only $66.
As nemesismk2 says there's no reason to get a Kyro 1 these days unless you want something under $50. Because the Kyro II is 55% faster then Kyro 1, usually has double the amount of ram and is only 31% more expensive at the cheapest online stores.