Amazon offers the PNY DuoLink 128GB USB 3.0 / microUSB Flash Drive for Android
, model no. P-FDI128GOTGTO30-GE, for $29.99
. (Best Buy
charges the same. Plus, Prime members get free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $8.02.) That's the lowest total price we could find by $15. It can connect right to a phone for extra storage using its own microUSB plug.