Adorama offers the Lexar 64GB JumpDrive TwistTurn USB 2.0 Flash Drive in Black, model no. LJDTT64GASBNA, for $49.95. With free shipping, that's $0.78/GB and the lowest total price we've ever seen for a 64GB flash drive. (It's also a price low by $19.)

Of note, this item is currently backordered. An estimated ship time is not given.