Buy.com via Rakuten offers the Samsung 850 Pro Series 512GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. MZ-7KE512BW, for $257.99. Coupon code "SAMSUNG30" cuts it to $227.99. With free shipping (select "Budget" at checkout), that's $35 under our mention from three weeks ago (which included an 8GB RAM kit) and the lowest total price we've seen. (It's also a current low by $30.) The SSD features read speeds of up to 550MB/s and write speeds of up to 520MB/s. Deal ends June 20.