NeweggFlash offers the Seagate 5TB Expansion Desktop USB 3.0 External Hard Drive, model no. STBV5000100, for $189.99. Promo code "EMCPAHH222" cuts it to $159.99. With free shipping, that's tied with our mention from a week ago as the least expensive 5TB USB 3.0 external hard drive we've seen. (It's also a current low by $14.) Deal ends September 23.