Newegg via eBay offers the Seagate Backup Plus 4TB USB 3.0 External Hard Drive
in Black, model no. STDR4000100, for $104.99
with free shipping
. That's the lowest total price we could find by $14, although we saw it for $20 less (and bundled with a $20 Shutterfly credit) on Cyber Monday. This 2.5" drive includes an offer for 200GB of OneDrive cloud storage.