OutletPC offers the Crucial 512GB M550 Serial ATA 6Gb/s 2.5" Internal SSD, model no. CT512M550SSD1, for $199.98 plus $7.95 for shipping. That's the lowest total price we could find by $4; most merchants charge $225 or more. (However, we saw it for $28 less in August.) It features read speeds of up to 550MB/s and write speeds of up to 500MB/s.