Newegg offers the Seagate 4TB Expansion USB 3.0 External Hard Drive, model no. STBV4000100, for $129.99. Apply coupon code "VISACHECKOUT" and pay via Visa Checkout to drop it to $116.99. With free shipping, that's tied with last week's mention and the lowest total price we could find by $13. Deal ends October 31.
Note that the above coupon can only be used once per account.