Occasionally the refurbished section at the Apple website has some good deals, and this look to be one of them. While the other iMacs are generally at about an 18% discount, this is 28% off the retail price and an excellent deal on the 24" iMac. In fact, there is a 20" iMac listed for the exact same price, to put it in perspective.
http://store.Apple.com/us/product/FA878LL/A?fnode=home%2Fspecialdeals%2Fipod#overview
Model Refurbished 24-inch iMac
Processor 2.4GHz Intel Core 2 Duo
L2 Cache 4MB Shared
System bus 800MHz
Memory 1GB (one SO-DIMM) 667MHz DDR2 SDRAM (PC2-5300), supports up to 4GB
Hard drive 320GB Serial ATA; 7200 rpm
Optical drive Slot-loading 8x SuperDrive with 4x double-layer burning (DVD±R DL/DVD±RW/CD-RW)
Display 24-inch (viewable) glossy widescreen TFT active-matrix LCD, 1920 by 1200 pixels, millions of colors
Video Built-in iSight; mini-DVI output port with support for DVI, VGA, S-video, and composite video connections via adapter
Graphics ATI Radeon HD 2600 PRO with 256MB of GDDR3 memory
FireWire One FireWire 400 and one FireWire 800 port; 7 watts each
USB Three USB 2.0 ports on computer; two USB 2.0 ports on keyboard
Audio Built-in stereo speakers with 24-watt digital amplifier, built-in microphone, optical digital audio output/headphone out, optical digital audio input/audio line in
Ethernet Built-in 10/100/1000BASE-T (Gigabit)
Wireless Built-in AirPort Extreme (802.11n); built-in Bluetooth 2.0+EDR (Enhanced Data Rate) module
Hardware accessories Apple Remote, Apple Keyboard, and Mighty Mouse
Other Built-in IR receiver
# Size and weight Height: 20.5 inches (52.0 cm)
# Width: 22.4 inches (56.9 cm)
# Depth: 8.1 inches (20.7 cm)
# Weight: 25.4 pounds (11.5 kg)

