Amazon has got the Crucial 256GB m4 SSD (CT256M4SSD2) on sale for $169.99. It ships free with Super Saver Shipping.
Crucial 256 GB m4 2.5-Inch Solid State Drive SATA 6Gb/s CT256M4SSD2
The award-winning Crucial m4 SSD delivers powerful performance gains for SATA 6Gb/s systems. Designed to empower your system, the Crucial m4 SSD offers faster application load times, faster boot times, and increased durability compared to a traditional hard drive. The results speak for themselves: blazing-fast sequential read speeds of up to 500 MB/s for any file type.