Newegg offers the Samsung 840 Pro Series 512GB Internal Serial ATA 6Gb/s 2.5" SSD, model no. MZ-7PD512BW, for an in-cart price of $269.99. Coupon code "SAMSSDSAVE20" cuts it to $249.99. With free shipping, that's $50 under our mention from last month and the best price we've seen. (It's also a current price low by $55.) It features read speeds of up to 540MB/s and write speeds of up to 520MB/s.