I bought a Black Knight 2000 for $2500 ish 2 yrs ago after Andrew(Beaky) talked me into it. Best thing I ever did.   

The machine is worth every cent and is a machine I would never ever sell because it is such a great game. Best light show, best audio, just bloody unreal challenging machine.
A few have bagged it, but I reckon they havent given it a serious play to say something negative.  Some say its a right flipper happy game, but thats far from true. You have to play this game properly to see what a bloody great game it is. Very challenging, but very much a fun game. Its a better game than overpriced titles like late model Bally MM etc. Its just better if u like challenging.

You can buy new decals (full cabinet, headbox n coindoor etc) for $199 from Jeff - Classic Arcades in the USA, and brand new backglass from Bay Area/Marco Spec in the USA.   * Worth every cent of $2450. Buy it and dont even bother hesitating or you will miss out n kick ya self.