For its newsletter subscribers only, newegg offers the Seagate 4TB Central Network Attached Storage External Hard Drive, model no. STCG4000100, for $209.99. Coupon code "EMCYTZT4088" cuts it to $179.99. With free shipping, that's $0.04/GB, $10 under our June mention, and the lowest total price we could find by $20. This PC/Mac-compatible NAS connects to your wired or wireless router for backup or file sharing. Deal ends August 29.