As one of its daily deals, Amazon offers the Crucial MX100 Series 512GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. CT512MX100SSD1, for $170.99 with free shipping. That's the lowest total price we could find by $34, although we saw it for a buck less in February. It features read speeds of up to 550MB/s and write speeds of up to 500MB/s. Deal ends today.