I ended up giving $31,500 for it. They were asking $32,995. I could've haggled a bit more I believe, but I was tired of shopping around.
The headlight lens covers were a little fogged, so I negotiated
- A professional to polish the lens to a "new look", and if not happy, then
- Replace both headlights w/ new lenses
And I made him put it down in writing. LoL I'm taking it into the dealer tomorrow to have the headlight work done, and get the steering volume controls fixed.
I ended up financing about 11K, and got the 2.9% BMW financing since it was a 2004+ CPO vehicle.

So, I ended up w/ a pretty sweet "no brainer" deal (I believe anyway).
Hopefully no one will post that they purchased an identical one for < $30K.
I also looked at an identical one at a local chevy dealer (also w/ 42.5K miles on it), and they were asking $29,900 with no warranty whatsoever.
They attempted to sell me their GM Warranty ($3750) but I new better.
Evidently, they were actually upside down on that car. They showed me the invoice where they purchased it at the auction, and they paid $31K and change. Guess that's why they've been sitting on that X5 for over a year.