Refurbished: ASUS M11AD-US007S-B B Grade Desktop PC Pentium G3220 (3.00GHz) 4GB DDR3 1TB HDD Windows 8 [newegg.com]
Also appealing is this i5 configuration:
Refurbished: ASUS M11AD-CA001S-B B Grade Desktop PC Intel Core i5 4440 (3.10GHz) 8GB DDR3 1TB HDD Windows 8 [newegg.com]
I may be wrong, but I think Grade B means scratch and dent.