newegg offers the OCZ Agility 4 512GB 2.5" Serial ATA 6Gb/s Internal Solid State Drive, model no. AGT4-25SAT3-512G, for $379.99. Coupon code "HARDOCPX8X1A" drops it to $322.99. With free shipping, that's $0.63/GB and the lowest total price we could find by $37. This drive features read speeds of up to 420MB/s and write speeds of up to 410MB/s. Coupon expires August 5.