This the level of service I was hoping to get from the Apple stores, but couldn't. I have a Mac Pro (2008) 3,1 which has some serious compatibility issues with graphics cards and its factory one was toast .(The Apple store didn't diagnose it, and generally failed at having a clue). It looked hopeful to me that it could be a bad graphics card. None of the Apple retail stores could help. But the last Apple store I talked to, referred me to the Mac Clinic (and 2 other local mac shops). The Mac Clinic had to hunt around, but came up with a use card within the hour which saved the day. This might not sound like a raving review, but a mac user in Las Vegas, won't do much better elsewhere.