Trans Intl. offers its Trans Intl. miniXpress425 500GB USB / FireWire External Hard Drive for $79. With $8 for shipping, that’s $0.17/GB, $20 under our mention from last summer, and the lowest total price we could find. It features an aluminum enclosure, both USB 2.0 and FireWire 400 connectivity, an 8MB cache, and it runs at 5400 rpm.