Thumb Score: +21 Amazon.com has 4TB Western Digital Elements USB 3.0 External Hard Drive (WDBWLG0040HBK-NESN) on sale for $79.99. Shipping is free. Thanks youzee Deal Editor's Notes & Price Research: [LIST][*]Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.