Buy.com via Rakuten offers the SanDisk 32GB Extreme USB 3.0 Flash Drive, model no. SDCZ80-032G-A75, for $30. Apply coupon code "VISACHECKOUTPROMO" and check out via Visa Checkout to cut it to $20. With free shipping, that's tied with our mention from last fall as the lowest total price and a current low by $7. It features transfer speeds of up to 190MB/s. Deal ends March 17.