Historical price volume data

Respected members !
Where can I get "Historical Price Volume Data" for commodity market, just like we can get nse data here : http://www.nseindia.com/content/equities/eq_scriphistdata.htm

Historical Data for MCX (Since 2003), NCDEX (Since 2003) (MetaStock Format) & COMEX (Since 1998 in Text Format) is available with me on a CD for Rs.800/- If interested, you may contact me at metaup@********** or 09327202829

I was expecting free data. Afterall this forum is free for all. When other data like FOREX, STOCKS is freely available, then commodity data must be available free too somewhere.