The price depends on the purity you require. The Acros catalog lists 100g of 99% pure Si at $36. The same amount of 99.9999% pure Si costs about $273.
Author: Fred Senese email@example.com
Copyright © 1997-2010 by Fred Senese
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Last Revised 08/17/15.URL: http://antoine.frostburg.edu/chem/senese/101/inorganic/faq/print-silicon-price.shtml