TigerDirect offers the SanDisk 128GB 2.5" Serial ATA 6Gb/s Internal SSD, model no. SDSSDP-128G-G25, for $49.99 plus around $4 for shipping. (Newegg and Provantage charge a buck more.) That's the lowest total price we could find by $2, although we saw it for $6 less two weeks ago. It features read speeds of up to 475MB/s and write speeds of up to 375MB/s.