Kingston Digital 120GB SSDNow V300 SATA 3 2.5 (7mm height) with Adapter Solid State Drive 2.5-Inch… for $69.99 + free shipping
Amazon offers Kingston 120GB SSDNow V300 Series Serial ATA 6Gb/s Internal SSD, model no. SV300S37A/120G, for $69.99 with free shipping. That's $0.58/GB, the lowest total price i could find by $15. It is also the second lowest price i seen for this drive without a rebate. It features read and write speeds of up to 450MB/s.