I don't think it is a good deal.
You can get a brand new Dell (including a flat screen) for around this amount.
For example, a few days ago, Dell had a deal on the PC below + 19" Flat screen for $399:
* Intel® Pentium® Dual-Core E2160 (1.80GHz, 1MB L2 Cache, 800FSB)
* Genuine Windows® XP Home Edition
* Microsoft Works 8. Does NOT Include MS Word
* Dell 19 inch Widescreen E198WFP Analog Flat Panel Monitor
* 1GB Dual Channel DDR2 SDRAM 667MHz - 2DIMMs
* Single Drive: 16X DVD+/-RW Drive
* 160GB Serial ATA Hard Drive (7200RPM) w/DataBurst Cache™
* Intel® Graphics Media Accelerator 3100
* No Floppy Drive
* No Modem Option
* Integrated 7.1 Channel Audio
Source:
http://www.dealshouter.com/Computers...B__19_LCD_399/
I don't know if this deal is still valid. Might want to check it out.