Adorama offers the Toshiba Canvio Basics 500GB USB 3.0 Portable Hard Drive, model no. HDTB205XK3AA, for $44.99. This $20 mail-in rebate cuts it to $24.99. With free shipping, that's $5 under last month's mention, a current low by $21, and the lowest total price we've seen. It features an 8MB cache. Rebate expires April 30.