Today, Apple's online store has a wide selection of refurbished Mac Pro configurations starting as low as $2149 for the 2.66GHz model with 3GB of RAM and a 640GB hard drive. Next on the list is the 2.93GHz Mac Pro with 3GB of RAM and a 640GB hard drive for $2549. Save $500 on this next Mac Pro that offers dual 2.26GHz processors 6GB of RAM and a 640GB hard drive, now $2799. The next 8-Core Mac Pro model features faster processing speeds, boasting two 3.2GHz processors, 2GB of RAM and a 500GB hard drive for $3299.