That and many others, already there:
http://www.urbandictionary.com/define.php?term=niggerization
Niggard:n. A person meanly close and covetous; one who spends grudgingly; a stingy, parsimonous fellow; a miser.
http://machaut.uchicago.edu/?resource=Webster%27s&word=niggard&use1913=on&use1828=on