Hi guys (and gals if there are any). I'm new to the forum and am considering purchasing a '99 Boxster that is for sale locally.

Here are the details:
Immaculate exterior condition, probably re painted
Some interior defects, center console lid need replaced, new shiftknob.
Engine loots clean, no weeping, dry.
Transmission/clutch is smooth, no problems.
Aero body kit installed, front, rear, and side skirts.
19' black porsche rims all around.

What would a vehicle of this description go for?
Are there any other things I should look for?

One more thing. When I took it out for a test drive, afterwards, there was this black dust on the rear fender, right behind the rear tires. I thought it was the tires, but anyone have any thoughts?

Thanks a lot for your time.