Staples offers the Kingston 120GB HyperX 3K Serial ATA 6Gb/s 2.5" SSD, model no. SH103S3/120G, for $74.99 with free shipping ($0.62/GB). That's the lowest total price we could find by $21, although we saw it for $15 less three days ago (since expired). Sales tax is added where applicable. Features include max write speeds of 510MB/sec and max read speeds of 555MB/sec.