DigitalDude said:just a word of caution (ofcourse, out of experience): don't cheap out on the HDD shipping. ask the seller to bubblewrap and use a good courier or else you'll regret later.
_
^... Do you really think seller (I mean not just eBay) really listen to packing request & improve it further on their own.. I'd bought many HDD's online, only once (from dvdstoredelhi) did I got a perfectly packed HDD with enough bubble wrap to make a few balls... everybody else simply uses one layer of bubble wrap & its your luck if it gets to you in good condition... I once bought three HDD's here @ TE & the seller shipped them in an envelope, even though I told him how to pack it properly with bubble wrap...
Last HDD I bought from eBay was again sent in a padded envelope with no bubble wrap but a cardboard wrap, even though I specifically requested for bubble wrap. Thankfully HDD came in good condition (maybe I should thank GATI) & I tested it fully before dumping my data..