TigerDirect offers the Crucial MX100 Series 512GB Serial ATA 6Gb/s 2.5" Internal SSD, model no. CT512MX100SSD1, for $189.99. Purchase via Visa Checkout to cut the price to $164.99. With free shipping, that's $5 below yesterday's mention and the lowest total price we've seen. (It's a current low by $29.) It features read speeds of up to 550MB/s and write speeds of up to 500MB/s.