Not that seriously but I just know that prices never drop that low in stores here. If they do drop a lot it's for games that came out eons ago
There's also The Elder Scrolls Anthology, which comes with all games plus the DLC.
Skyrim: Legendary Edition, 24$ on Steam sale right now.
Oblivion: Game of the Year, 14$ on Steam sale.
Morrowind, 12$.
There have been better Steam sales for these I'm sure. But that's 50$, at retail the whole collection is 40$ plus it comes with a sweet case!