Buy.com offers the CP Technologies 3.5" Portable USB 2.0 External Hard Drive Enclosure, model no. CP-U2H-3H, for $31.24. This $14 mail-in rebate cuts it to $17.24. With free shipping, it's the lowest total price we could find by $26. (It was $2 less in August, since expired.) This aluminum enclosure is hot swappable. Deal ends October 31.