Buying a BlackBerry off eBay - BlackBerryFAQ
The only guarantees are those the seller provides, and those guarantees are only as good as the seller's word. If they're refurbished then how are the boxes unopened? Unless the seller means his own boxes he used after refurbishing the units, or unless these are directly from RIM after being factory-refurbished, it sounds a little fugazey to me.