Newegg via eBay offers the Seagate 5TB Expansion Desktop USB 3.0 External Hard Drive, model no. STEB5000100, for $109 with free shipping. That's a buck under our June mention and the second-lowest total price we've seen. (It's the best deal now by $21.) It includes a 4-foot USB 3.0 cable and power adapter.
Platinum Micro via eBay offers the Seagate Seven 750GB Ultra-Thin USB 3.0 Hard Drive, model no. STDZ750100, for $85.99 with free shipping. That's $22 off list and the lowest total price we could find. It features an ultra-slim profile and steel enclosure. Deal ends July 31.