The Black Mesa Crowbar does 125 damage, the same as the Combat Knife Mk.1.
The Black Mesa Crowbar was a limited time item and is no longer available for direct purchase. However, it became temporarily available again as a part of the Onslaught Gold Pack. Though with the Parity Patch the Onslaught Gold Pack is no longer available for purchase.
This weapon is based on the crowbar used in Half Life 1 and 2. The original price is a reference to the joke that Valve can't count to 3.
Original Price Edit
In-game Description Edit
A familiar-looking weapon for bashing nearby opponents.