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Apple’s online store today offers a range of refurbished desktop Macs as low as $509. The refurbished Mac mini with a 2.5GHz Intel dual-core i5 processor, 4GB of RAM and 500GB hard drive has been cut to $509. A $150 discount is offered on the refurbished Mac mini with a 2.3GHz Intel quad-core i7 processor, OS X Server, 4GB of RAM and dual 1TB hard drives, now $849….
