This week at Apple's online store, save up to 31 percent on refurbished Mac minis. A $240 discount is available on the refurbished Mac mini with Lion Server, a 2GHz Intel quad-core i7 processor, 4GB of RAM and dual 500GB hard drives, now $759. A 31 percent discount is offered on a refurb Mac mini with a 2.5GHz Intel dual-core i5 processor, 4GB of RAM and a 500GB hard drive, now just $549.