Amazon offers the SanDisk ReadyCache 32GB 2.5" Serial ATA 3Gb/s Internal SSD, model no. SDSSDRC-032G-G26, for $39.99 with free shipping ($1.25/GB). That's the lowest total price we could find by $6, although we saw it for $2 less on Black Friday. It features a 128MB cache, read times of up to 450MB/s, and write times of up to 115MB/s.