BuyDig via eBay offers the Samsung 840 Pro Series 512GB Internal Serial ATA 6Gb/s 2.5" SSD, model no. MZ-7PD512BW, for $399.99 with free shipping ($0.78/GB). That's $19 under our mention from two weeks ago (which included a $42 Rakuten Shopping credit) and the lowest total price we could find by $60. It features read speeds of up to 540MB/s and write speeds of up to 520MB/s. Deal ends July 30 at 11:28 am ET.