Western Digital Store cuts 25% off a selection of its factory-refurbished external hard drives via coupon code "DNMAR17", with prices starting at $37.49 after coupon, as listed below. Shipping adds $5.99, but orders of $50 or more bag free shipping. Refurbished items carry a 6-month Western Digital warranty. Deal ends March 31. The drives, with prices after coupon and compared to the best available deals for new units, all with free shipping, except where noted: