Adorama via eBay offers the Samsung 850 Pro 256GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. MZ-7KE256BW, for $117.99 with free shipping. That's the lowest total price we could find by $18, although we saw it for $6 less three weeks ago. It features read speeds of up to 550MB/s and write speeds of up to 520MB/s.