Apple's online store today has the refurbished previous-generation Mac mini (model no. MC238LL/A) with a 2.26GHz Intel Core 2 Duo processor, 2GB of RAM and a 160GB hard drive as well as a NVIDIA GeForce 9400M graphics card, 8x SuperDrive, FireWire 800 port, built-in AirPort Extreme wireless and Bluetooth for only $499.  That's $100 off the original price of $599 and the lowest price we have seen on this Mac model anywhere.  FREE shipping is included and sales tax applies for residents of most states. 

Save $210 on the refurbished 2.53GHz Mac Mini with 4GB of RAM and a 320GB hard drive, it's now $589 with FREE shipping at Apple's online store.  For a bit more upgrade to the 2.66GHz Mac Mini with 4GB of RAM and a 320GB hard drive, now $719 with FREE shipping at Apple's online store as well.  Get a brand new Mac mini with a 2.4GHz processor, 2GB of RAM and a 320GB hard drive from MacMall.com for the reduced price of $669 after a $30 price break, FREE shipping is included.