B&H has the Seagate 5TB Backup Plus external hard drive with USB 3.0 for $139.99 (reg. $199.99). Note, you must use promo code SHOPEB40 at checkout to get this pricing. You can find it while it lasts here at B&H Photo.
Note: This is labeled as a grey market item with a 1-year seller warranty. At the time of this post, ebay seller BigValueInc has a positive feedback rating of 99.4%.