Dell Small & Home Office has the Buffalo LinkStation Duo 4TB External Network Attached Storage Hard Drive, model no. LS-WV4.0TL/R1, for $399.99. Coupon code "K$$V3WNT4?Z6VX" cuts it to $349.99. With free shipping, that's $0.09/GB and the lowest total price we could find by $19. Sales tax is added where applicable. This unit includes two 2TB hard drives, Ethernet connectivity, and four USB ports. It runs RAID levels 0 and 1, and JBOD. Deal ends June 14 at 10 am ET.