Amazon has
WD 8TB My Book Desktop External Hard Drive, USB 3.0 – WDBBGB0080HBK-NESN on sale today for $126.99 and free ship
Also at B&H photo with free shipping. Tax is collected in some states with them so worth checking.
The 10TB is also on sale and a bit better per TB but if you only need 8TB or less this is also a great deal.