newegg offers the OCZ Vector 128GB Serial ATA 6Gb/s 2.5" Internal SSD (pictured), model no. VTR1-25SAT3-128G, for $129.99 with free shipping ($1.02/GB). (Amazon sells it for the same price.) That's the lowest total price we could find by $22. It features read speeds of up to 550MB/s and write speeds of up to 400MB/s.

Also available is the ADATA XPG SX900 128GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. ASX900S3-128GM-C, for $99.99. This $10 mail-in rebate drops it to $89.99. With free shipping, that's $0.90/GB and another price low, this time by $38. It features read speeds of up to 550MB/s and write speeds of up to 520MB/s. Rebate ends March 7.