Bioshock & Oblivion bundle (PC) $9 @ Amazon [Prime]

Bioshock & The Elder Scrolls IV: Oblivion bundle (PC) $9

The Xbox 360 bundle version is going for $33.

The version of Oblivion included is only the standard edition (Elder Scrolls IV: Oblivion), rather than the GotY edition (The Elder Scrolls IV: Oblivion Game of the Year Edition), so it does not include the Knights of the Nine or Shivering Isles expansion packs.

Just to compare, Oblivion GOTY edition by itself is going for $20. Bioshock by itself is $12.