It's only $99 not including a 15% discount since I'm a student, with 7 day return if it doesn't work. Now here's the problem... I've never used a tower computer before. I've always been using laptops and am currently using a mac mini. Is there any way to tell which model the Mac Pro is without plugging it into a monitor and turning it on? The shop owner said he doesn't know either and has no way of finding out. Also I have some general questions on Mac Pro's, 1. Are Mac Pro's 100% customizable? 2. Can the oldest Mac Pro be customized to be more powerful than a 2012 Mac Mini? 3. How hard is it to replace Mac Pro parts (hard drive, ram, graphics card..?) I'm wondering if I should buy the Mac Pro and replace my Mac Mini... I don't mind spending extra money the next few months to upgrade the hard drive to an SSD from OWC and fully maximize the Mac Pro's potential, but I thought I'd come here and ask first. Thank you!