Amazon offers the Crucial 128GB 2.5" Serial ATA 6Gb/s Internal Solid State Drive (SSD) with Transfer Kit, model no. CT128M4SSD2CCA, for $143.99 with free shipping. (newegg charges the same.) That's $1.12/GB and the lowest total price we could find by $13. The SSD features read speeds of up to 415MB/s and write speeds of up to 175MB/s.