There have been very few 2TB external HDD deals posted lately that have been deserving of rapturous applause, and indeed, this offering from MSY (eBay) won't change that. However, it does seem to be the cheapest available at the moment, and it has a local warranty.
CashRewards will give you another 84 cents off, that's the equivalent of 20GB for free!. Yes, it's almost worth the effort.
What model HDD is inside and can it be used as an internal HDD?