A pair of eBay profiteers are trying to cash in on the shortages of Apple's new Vader-esque Mac Pro desktop computer by pricing their machines at nearly double the retail value.Apple started taking pre-orders of the new Mac Pro -- a 10-in. tall black cylinder -- early Thursday on its online store. Within hours, ship dates for new orders stretched from an initial Dec. 30 to some time in February.One eBay seller guaranteed delivery by Dec. 25, but did not reply to questions on how the Mac Pro was obtained.The lowest-priced stock configuration of the Mac Pro features a quad-core Intel Xeon E5 processor, 12GB of system memory, dual AMD FirePro D300 graphics processors (GPUs) and 256GB of PCIe-based flash storage.Two eBay sellers have listed that entry-level Mac Pro at purchase prices of $5,500 and $5,800, or 83% ad 93% aove retail, respectively.One
