newegg offers the ADATA XPG SX300 256GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. ASX300S3-256GM-C, for $199.99 with free shipping. That's $0.78/GB and the lowest total price we could find by $60. (We last saw a 256GB mSATA SSD for $40 less three weeks ago, but that had slower write and read speeds.) It features read speeds of up to 550MB/s and write speeds of up to 505MB/s.