mwave offers the HornetTek 2-Bay USB External 3.5" Hard Drive Enclosure
, model no. HD-3210U2S, for $32.99
with free shipping
. That's $2 under our February mention and the lowest total price we could find by $15. This enclosure can hold two Serial ATA hard drives, supports JBOD, and has a built-in 50mm fan.