Amazon offers Prime members the SanDisk 32GB Ultra Fit USB 3.0 Flash Drive, model no. SDCZ43-032G-G46, for $11.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $8.) That's a buck less than our April mention and the lowest total price we've seen. (It's a current low by $3, outside of the mention below.) It features read speeds of up to 130 MB/s and is backwards compatible.

A close price: CourtesyTrading via eBay has it for $11.69 plus $1.20 for shipping.