Bioshock's price

Howdy,

Anyone have any idea when Microsoft is planning on dropping the price for Bioshock? They must be still selling decent because it has been out for quite some time and is still $49.99. Also if I choose to buy a copy off of Ebay will it work on my PC, since they have such high security measures on the disk?

Thanks,

Samslayer

Microsoft eh... Anyways, big hits like bioshock usually keep their release price for a while. You could wait for a special on steam, they sometimes have it for $39.99