I'm picking up a 2007 335i in Dallas next week from a private seller and need a Pre Purchase Inspection done on the vehicle. I wanted to get it done at STETT, but they're not open on Saturdays. Called BMW of Dallas and they want almost $500 (stealership). Does anyone have a suggestion of a place to get a PPI done in the Dallas/Ft Worth area at a reasonable cost?

Thanks!
David