As one of its daily deals, Newegg offers four Western Digital 3TB Red Serial ATA 6Gb/s Internal Hard Drives, model no. WD30EFRX, for $399.99 with free shipping. That's $100 per unit and the lowest total price we could find for this quantity by $88. Each hard drive is optimized for use in NAS systems and features a 64MB cache. Deal ends today.