Up for bid on eBay is a BioShock game real audio diary, one of the rarest BioShock items ever sold (1 of 4 produced). This audio dairy was produced as part of a viral campaing for the release of BioShock 2, according to the seller.
The seller explains, "What is an Audio Diary? Audio Diaries are the main narrative device of the BioShock series. They were recorded by the citizens of Rapture, either as notes for themselves or as messages for other residents. When the player picks up an Audio Diary he or she can usually choose to play its message, however a handful of plot-crucial diaries throughout the games play automatically as soon as they are picked up."
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