This deal has ended.
Update: the deal is dead! This is now sold out. Today only, Dell Home has the 500GB Seagate XTreme External Hard Drive (model ST305004FPA2E3-RK) on sale for $49.99 after a $90 instant discount, marking the all-time low we've seen on this drive. This enclosure contains a 7200 rpm hard drive, connects via USB, eSATA, or FireWire, and you're only paying $0.10 per gig. Shipping is free with sales tax charged in most states.