Amazon offers the Crucial M500 240GB mSATA SSD Drive, model no. CT240M500SSD3, for $149.99 with free shipping. (B&H Photo Video has it for the same price, but isn't taking orders until tomorrow.) That's $0.63/GB and the lowest total price we could find by $9. It features read speeds up to 500MB/s and write speeds up to 250MB/s.