There are at least 3 different sizes of Fubar--small
I've had the small version riding in my truck for the past year and a half, and it's a comforting tool to say the least. I'm pretty confident that it could smash/pry/tear through just about anything that I might need it to. They're a damn fine tool to have around in your vehicle kit or in an urban get home bag.
Fubars have gained a cult-like following in some groups--the Usual Suspect Network (USN) has a 340+ post thread about customized and tricked out fubars. Replacing the rubber grip with a paracord wrap seems to be the most common mod.
Fubars can occasionally be found on uber-sale--like 60%-75% off, although I've never personally seen one that low. They can be ordered on Amazon, or purchased from Lowe's, Home Depot, Wal-Mart, etc.