Best Buy via eBay offers the SanDisk 32GB Ultra OTG microUSB / USB 3.0 Flash Drive in Black, model no. SDDD2-032G-A46, for $9.99 with free shipping. That's the lowest total price we could find by a buck (but many charge $18 or more), although it was a buck less in August. Compatible with microUSB and USB 3.0 devices, this flash drive features transfer rates of up to 130MB/s.