OCZ Agility 4 512GB 2.5" SATA III MLC Internal Solid State Drive (SSD) $289 shipped at BuyDig
BuyDig has the OCZ Agility 4 512GB 2.5" SATA III MLC Internal Solid State Drive (SSD) + OCZ SSD Upgrade Kit for $349 - $60 off promotion code SSD512 = $289 with free shipping. Features: Up to 420MB/s Read, up to 410MB/s Write speeds. OCZ Upgrade Kit includes: 2.5" to 3.5" adapter bracket, 2.5" external drive enclosure, and Acronis True Image HD software. BUYDIG
Next lowest price on Google Products from a rated merchant is $329.99.