I have a 2007 GXP just over 24K I'm probably going to sell or trade soon.
I purchased this car used in November 2009, it had just under 18K on it.
Stealth Grey, side bags, block heater, roof, 6-cd and nav, got it all. I bought a GMPP 48/48 B-B warranty when I purchased Nov 2009 @ 18K, which I believe is transferrable.
All routine maintenance done on or before scheduled. That includes alignment, coolant, ATF, O&F (syn), battery recently replaced.
Conti Extreme Contact DWS tires (255.45.18F 235.50.18R) mounted @ 18,097 on 19DEC2009 @ Discount Tire. Do you enjoy traveling? Out Spokane way.
Also have spare pair of rear rims (18 x 7" wide) if you someday want to go to four same-size tires. AND have Caddy donut spare that fits. And trunk liner. And...wait, that's all, folks.