Try pricewatch , ebay, Shopzilla, Nextag, etc. (Do a google search for "best price on merchandise"
tryed ebay no luck
Oh, and try to get a bundled version with a game or games you want. That will save you a few dollars. I wish I had waited and purchased the PS3/GT5 bundle instead of rushing out and buying the stupid bundle with GoW, and GT5 as a separate...(coulda kicked myself when I saw it at GT5 bundled at best buy around Christmas...1 month after my purchase...it's not like I'm a rich boy Grrr..)