Costco offers its members the ioSafe Solo G3 4TB USB 3.0 External Hard Drive
with free shipping
. (Non-members pay $17.50 more.) That's the lowest total price we could find by $93. This drive protects against data loss in fire up to 1550° F for half an hour and from full water immersion up to 10 feet for 72 hours. Deal ends October 18.