Amazon offers the Samsung 850 Pro Series 512GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. MZ-7KE512BW, for $239 with free shipping. That's $41 below our mention from two weeks ago, which included a $50 Kohl's gift card, and the lowest outright price we've seen. (It's a current low by $19.) It features read speeds of up to 550MB/s and write speeds of up to 520MB/s.