http:// http://www.amazon.com/Corsair-Voyager-Android-devices-CMFVG-64GB-NA/dp/B00HVT27B8
Corsair Flash Voyager GO 64GB USB3.0 micro USB OTG Flash Drive for Android Devices CMFVG-64GB-NA for$ 26.99.
Free Shipping on orders over $ 35.

Alternative choice:http://www.amazon.com/Corsair-Flash-Voyager-Slider-CMFSL3B-128GB/dp/B00E3RHS4C
Corsair Flash Voyager Slider 128GB USB 3.0 (CMFSL3B-128GB) for $ 37.99 + Free shipping.

Good price I think.
First thread here, hope it can help.