**[Newegg (via eBay)](http://www.passwird.com/links/QgwGlp)** has the 4TB Seagate Backup Plus USB 3.0 Portable External Hard Drive (STDR4000100) for **$109.99** with free shipping. Features: USB-powered — no external power brick required.

Next lowest price on [Google Products](http://www.passwird.com/links/9DLAj1) from a rated merchant is $129.