Seagate.com offers the Seagate FreeAgent 250GB USB 2.0 External Hard Drive
, model no. ST302504FDB1E1-RK, for $37.99
for shipping. At $0.18/GB, it's one of the best total prices we've seen for an external drive of this capacity, especially without rebate hassles. It runs at 7200 rpm and features an 8MB cache.