Just in the last two weeks Mwave/eWiz had them for $399 after instant rebates with free shipping, and there's also the $15 manuf. rebate.
Most of the other 3rd party e-tailers followed suit:
http://www.logicbuy.com/deals/intel...-solid-state-drive-SSDSA2MH160G2C1/13903.aspx
Look at eBay. Tons of people picked them up at that price and are selling them for $399 + free shipping knowing you can get the 8% Bing, but they pocket that difference anyways.
I bought mine in a bid war for $360 + $5 shipping. Newegg, which has always had incredibly high pricing on the X-25m's, is even at $425 or something. You know you can get a better deal than $425 when that's where Newegg is pricing.