The Elder Scrolls Store (thanks Thomas) now offers the promised new dungeon
quest for Elder Scrolls IV: Oblivion. In the old days they'd give away the razor
to sell the blades, but in this case you'll have to pony up $2.99 for Mehrunes'
Razor. Word is: "Conquer one of the deepest and most challenging dungeons in all
of Cyrodiil to claim this fearsome weapon."