Corresponding to the release of BioShock Infinite, a fan has put up a functional BioShock audio diary on eBay. The auction is set to close March 31 and right now the bidding price is set at over $2,500.

The promotional piece was made was part of the “There’s Something in the Sea” viral campaign for BioShock 2 and there were only four made. Via the ARG, the current owner of the audio diary received the item, which actually does work.