pre-owned i5 2.3G Mac mini $400 at cowboom

Cowboom [cowboom.com] has Mac Mini i5 for their front page deal for $400. Everyone that I have seen is an i5 2.3GHz 2GB 500GB system. Most seem to be graded at "7 - Overall good condition" but I was able to grab a grade 8.

Note: they do seem to be sprinkling windows type systems in occasionally, but I have been able to come back to the Mac Mini by reloading.

Description:
Apple Mac mini Desktop i5 2.3GHz 2GB 500GB WiFi

Intel Core i5 processor - Features a 3MB L3 cache and 2.3GHz processor speed.
Intel Core i5 processor - Features smart 4-way processing performance with a speed boost.
Intel Turbo Boost Technology - Automatically speeds up your processor when your Mac needs extra performance. Intel HD Graphics are built into Intel's smart new processors.
2GB DDR3 memory - For multitasking power.
500GB hard drive (5400 rpm) - Offers spacious storage and fast read/write times.
Intel HD Graphics 3000 - Feature 288MB DDR3 SDRAM video memory for lush images. HDMI output for connection to an HDTV. Dual display and video mirroring capability.
Thunderbolt port, FireWire port (800 Mbps) and 4 USB 2.0 ports - Provide quick and simple connection for digital peripherals. Bluetooth 4.0 wireless interface.
Built-in wireless LAN (802.11a/b/g/n)
Built-in 10/100/1000Base-T Ethernet LAN with RJ-45 connector.
ENERGY STAR qualified - Designed to use less energy and meets strict energy efficiency guidelines set by the Environmental Protection Agency and U.S. Department of Energy.

I was able to get:
Apple Mac mini Desktop Core i5 2.3GHz 2GB 500GB WiFi
Condition: Pre-owned
Included: Mac Mini Desktop, Power Cord, Manual
Not Included: Apple Keyboard, Apple Mouse, Apple O/s Install Disc
Product Grade: 8 - Almost new, minor signs of use