Used X5 Pricing?? How low can you go?

[tekman]

Ok looking at some of the Certified Pre-owned pricing out there, and reading up on Invoice pricing of new 2011 and some 2010 models, what is a good price for a used 2008 model?

I'm seeing a lot of Invoice pricing on the new 3.5i models around $45700.

I'm also seeing 2008 and 2007 models for the 3.0si anywhere from $34K to 41K. Now I know negotiation comes into play, and options, wear and tear, amount of inventory etc, however...

For those of you that purchase used, 2007 or 2008, heck, even 2009's, what kind of pricing were you able to negotiate? I'm trying to get an idea on how bold to be when negotiating either used or new.

Any advice on this would be greatly appreciated.